./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/dll-fst-data.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/dll-fst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0c43b1e86d53f0a623ddcdf970bae6b5fd24ed69ec4a9688050aa705dc6cf897 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:24:10,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:24:10,551 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-28 05:24:10,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:24:10,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:24:10,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:24:10,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:24:10,596 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:24:10,596 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:24:10,597 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:24:10,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:24:10,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:24:10,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:24:10,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:24:10,599 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:24:10,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:24:10,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:24:10,599 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:24:10,600 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:24:10,600 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:24:10,600 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:24:10,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:24:10,600 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:24:10,601 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:24:10,601 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:24:10,601 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:24:10,601 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:24:10,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:24:10,601 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:24:10,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:24:10,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:24:10,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:24:10,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:24:10,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:24:10,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:24:10,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:24:10,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:24:10,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:24:10,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:24:10,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:24:10,604 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:24:10,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:24:10,604 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:24:10,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:24:10,604 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_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c43b1e86d53f0a623ddcdf970bae6b5fd24ed69ec4a9688050aa705dc6cf897 [2024-11-28 05:24:10,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:24:10,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:24:10,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:24:10,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:24:10,948 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:24:10,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/memsafety-broom/dll-fst-data.i [2024-11-28 05:24:13,854 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/data/b620e0eda/8ebb6673a37849b382642fdc36cff7d9/FLAG5812d1d12 [2024-11-28 05:24:14,234 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:24:14,234 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/sv-benchmarks/c/memsafety-broom/dll-fst-data.i [2024-11-28 05:24:14,256 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/data/b620e0eda/8ebb6673a37849b382642fdc36cff7d9/FLAG5812d1d12 [2024-11-28 05:24:14,414 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/data/b620e0eda/8ebb6673a37849b382642fdc36cff7d9 [2024-11-28 05:24:14,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:24:14,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:24:14,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:24:14,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:24:14,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:24:14,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b62fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14, skipping insertion in model container [2024-11-28 05:24:14,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,474 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:24:14,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:24:14,786 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:24:14,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:24:14,855 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:24:14,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14 WrapperNode [2024-11-28 05:24:14,856 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:24:14,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:24:14,857 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:24:14,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:24:14,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,897 INFO L138 Inliner]: procedures = 121, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 66 [2024-11-28 05:24:14,898 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:24:14,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:24:14,898 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:24:14,898 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:24:14,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,908 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,924 INFO L175 MemorySlicer]: Split 12 memory accesses to 1 slices as follows [12]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 7 writes are split as follows [7]. [2024-11-28 05:24:14,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,932 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,932 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,940 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:24:14,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:24:14,944 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:24:14,944 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:24:14,945 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (1/1) ... [2024-11-28 05:24:14,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:24:14,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:14,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:24:14,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:24:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:24:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-28 05:24:15,016 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-28 05:24:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:24:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 05:24:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 05:24:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:24:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:24:15,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:24:15,139 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:24:15,140 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:24:15,437 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2024-11-28 05:24:15,437 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:24:15,453 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:24:15,453 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 05:24:15,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:24:15 BoogieIcfgContainer [2024-11-28 05:24:15,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:24:15,457 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:24:15,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:24:15,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:24:15,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:24:14" (1/3) ... [2024-11-28 05:24:15,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177da566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:24:15, skipping insertion in model container [2024-11-28 05:24:15,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:14" (2/3) ... [2024-11-28 05:24:15,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177da566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:24:15, skipping insertion in model container [2024-11-28 05:24:15,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:24:15" (3/3) ... [2024-11-28 05:24:15,467 INFO L128 eAbstractionObserver]: Analyzing ICFG dll-fst-data.i [2024-11-28 05:24:15,482 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:24:15,484 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll-fst-data.i that has 2 procedures, 73 locations, 1 initial locations, 3 loop locations, and 28 error locations. [2024-11-28 05:24:15,524 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:24:15,537 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;@5a017937, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:24:15,537 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-28 05:24:15,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 41 states have (on average 1.829268292682927) internal successors, (75), 69 states have internal predecessors, (75), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-28 05:24:15,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:15,548 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 05:24:15,548 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:15,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:15,555 INFO L85 PathProgramCache]: Analyzing trace with hash 40232267, now seen corresponding path program 1 times [2024-11-28 05:24:15,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:15,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006494237] [2024-11-28 05:24:15,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:15,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:15,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:15,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006494237] [2024-11-28 05:24:15,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006494237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:15,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:15,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:24:15,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124938348] [2024-11-28 05:24:15,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:15,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:24:15,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:15,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:24:15,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:24:15,878 INFO L87 Difference]: Start difference. First operand has 73 states, 41 states have (on average 1.829268292682927) internal successors, (75), 69 states have internal predecessors, (75), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:15,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:15,996 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2024-11-28 05:24:15,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:24:15,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-28 05:24:16,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:16,005 INFO L225 Difference]: With dead ends: 70 [2024-11-28 05:24:16,006 INFO L226 Difference]: Without dead ends: 68 [2024-11-28 05:24:16,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:24:16,012 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 3 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:16,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:24:16,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-28 05:24:16,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-28 05:24:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 40 states have (on average 1.675) internal successors, (67), 64 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2024-11-28 05:24:16,056 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 5 [2024-11-28 05:24:16,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:16,057 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2024-11-28 05:24:16,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:16,060 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2024-11-28 05:24:16,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-28 05:24:16,060 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:16,060 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 05:24:16,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:24:16,061 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:16,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:16,062 INFO L85 PathProgramCache]: Analyzing trace with hash 40232268, now seen corresponding path program 1 times [2024-11-28 05:24:16,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:16,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214864133] [2024-11-28 05:24:16,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:16,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:16,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:16,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214864133] [2024-11-28 05:24:16,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214864133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:16,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:16,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:24:16,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006983750] [2024-11-28 05:24:16,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:16,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:24:16,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:16,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:24:16,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:24:16,222 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:16,308 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2024-11-28 05:24:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:24:16,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-28 05:24:16,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:16,309 INFO L225 Difference]: With dead ends: 65 [2024-11-28 05:24:16,309 INFO L226 Difference]: Without dead ends: 65 [2024-11-28 05:24:16,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:24:16,310 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:16,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 109 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:24:16,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-28 05:24:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-28 05:24:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 40 states have (on average 1.6) internal successors, (64), 61 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:16,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2024-11-28 05:24:16,323 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 5 [2024-11-28 05:24:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:16,324 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2024-11-28 05:24:16,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2024-11-28 05:24:16,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:24:16,325 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:16,325 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:16,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:24:16,325 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:16,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash -967584991, now seen corresponding path program 1 times [2024-11-28 05:24:16,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:16,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521099588] [2024-11-28 05:24:16,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:16,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:16,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:16,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521099588] [2024-11-28 05:24:16,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521099588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:16,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:16,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:24:16,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056527060] [2024-11-28 05:24:16,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:16,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:24:16,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:16,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:24:16,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:24:16,567 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:16,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:16,744 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2024-11-28 05:24:16,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:24:16,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-28 05:24:16,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:16,747 INFO L225 Difference]: With dead ends: 66 [2024-11-28 05:24:16,747 INFO L226 Difference]: Without dead ends: 66 [2024-11-28 05:24:16,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:24:16,748 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 18 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:16,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 163 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:24:16,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-28 05:24:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2024-11-28 05:24:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 40 states have (on average 1.5) internal successors, (60), 57 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2024-11-28 05:24:16,755 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 12 [2024-11-28 05:24:16,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:16,756 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2024-11-28 05:24:16,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:16,756 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2024-11-28 05:24:16,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:24:16,757 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:16,757 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:16,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:24:16,757 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:16,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:16,758 INFO L85 PathProgramCache]: Analyzing trace with hash -967584990, now seen corresponding path program 1 times [2024-11-28 05:24:16,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:16,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125282527] [2024-11-28 05:24:16,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:16,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:17,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:17,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125282527] [2024-11-28 05:24:17,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125282527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:17,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:17,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:24:17,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664767170] [2024-11-28 05:24:17,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:17,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:24:17,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:17,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:24:17,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:24:17,036 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:17,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:17,202 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2024-11-28 05:24:17,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:24:17,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-28 05:24:17,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:17,204 INFO L225 Difference]: With dead ends: 65 [2024-11-28 05:24:17,204 INFO L226 Difference]: Without dead ends: 65 [2024-11-28 05:24:17,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:24:17,205 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 6 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:17,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 197 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:24:17,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-28 05:24:17,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2024-11-28 05:24:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.475) internal successors, (59), 56 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:17,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-28 05:24:17,212 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 12 [2024-11-28 05:24:17,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:17,218 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-28 05:24:17,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-28 05:24:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 05:24:17,219 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:17,219 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:17,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:24:17,219 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:17,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:17,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1869016769, now seen corresponding path program 1 times [2024-11-28 05:24:17,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:17,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001436234] [2024-11-28 05:24:17,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:17,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:17,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:17,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:17,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001436234] [2024-11-28 05:24:17,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001436234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:17,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:17,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:24:17,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215845791] [2024-11-28 05:24:17,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:17,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:24:17,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:17,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:24:17,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:24:17,499 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:17,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:17,676 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2024-11-28 05:24:17,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:24:17,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-28 05:24:17,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:17,678 INFO L225 Difference]: With dead ends: 69 [2024-11-28 05:24:17,679 INFO L226 Difference]: Without dead ends: 69 [2024-11-28 05:24:17,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:24:17,680 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 1 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:17,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 227 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:24:17,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-28 05:24:17,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-11-28 05:24:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 64 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:17,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2024-11-28 05:24:17,689 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 21 [2024-11-28 05:24:17,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:17,689 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2024-11-28 05:24:17,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:17,689 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2024-11-28 05:24:17,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 05:24:17,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:17,690 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:17,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:24:17,693 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:17,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:17,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1869016770, now seen corresponding path program 1 times [2024-11-28 05:24:17,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:17,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337817357] [2024-11-28 05:24:17,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:17,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:18,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:18,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337817357] [2024-11-28 05:24:18,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337817357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:18,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:18,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:24:18,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237563379] [2024-11-28 05:24:18,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:18,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:24:18,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:18,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:24:18,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:24:18,137 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:18,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:18,332 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2024-11-28 05:24:18,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:24:18,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-28 05:24:18,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:18,334 INFO L225 Difference]: With dead ends: 69 [2024-11-28 05:24:18,334 INFO L226 Difference]: Without dead ends: 69 [2024-11-28 05:24:18,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:24:18,337 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 1 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:18,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 242 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:24:18,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-28 05:24:18,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-11-28 05:24:18,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.4375) internal successors, (69), 64 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2024-11-28 05:24:18,342 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 21 [2024-11-28 05:24:18,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:18,342 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2024-11-28 05:24:18,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:18,343 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2024-11-28 05:24:18,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 05:24:18,343 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:18,343 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:18,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:24:18,344 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:18,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:18,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1869086412, now seen corresponding path program 1 times [2024-11-28 05:24:18,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:18,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091913890] [2024-11-28 05:24:18,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:18,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:18,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:18,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091913890] [2024-11-28 05:24:18,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091913890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:18,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:18,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:24:18,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525080092] [2024-11-28 05:24:18,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:18,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:24:18,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:18,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:24:18,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:24:18,506 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:18,579 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2024-11-28 05:24:18,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:24:18,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-28 05:24:18,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:18,580 INFO L225 Difference]: With dead ends: 72 [2024-11-28 05:24:18,581 INFO L226 Difference]: Without dead ends: 72 [2024-11-28 05:24:18,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:24:18,582 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 24 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:18,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 341 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:24:18,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-28 05:24:18,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2024-11-28 05:24:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 65 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-28 05:24:18,594 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 21 [2024-11-28 05:24:18,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:18,594 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-28 05:24:18,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:18,595 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-28 05:24:18,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 05:24:18,595 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:18,595 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:18,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:24:18,595 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:18,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:18,596 INFO L85 PathProgramCache]: Analyzing trace with hash -181832146, now seen corresponding path program 1 times [2024-11-28 05:24:18,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:18,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680535391] [2024-11-28 05:24:18,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:18,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:18,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:18,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680535391] [2024-11-28 05:24:18,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680535391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:18,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922130932] [2024-11-28 05:24:18,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:18,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:18,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:19,002 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:19,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:24:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:19,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:24:19,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:19,229 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2024-11-28 05:24:19,337 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 05:24:19,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-28 05:24:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:19,346 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:24:19,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922130932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:19,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:24:19,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2024-11-28 05:24:19,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419338534] [2024-11-28 05:24:19,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:19,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:24:19,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:19,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:24:19,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2024-11-28 05:24:19,348 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:19,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:19,424 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-11-28 05:24:19,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:24:19,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-28 05:24:19,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:19,426 INFO L225 Difference]: With dead ends: 71 [2024-11-28 05:24:19,426 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 05:24:19,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2024-11-28 05:24:19,427 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 15 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:19,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 98 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 85 Unchecked, 0.1s Time] [2024-11-28 05:24:19,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 05:24:19,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-28 05:24:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.42) internal successors, (71), 66 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2024-11-28 05:24:19,432 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 24 [2024-11-28 05:24:19,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:19,432 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2024-11-28 05:24:19,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:19,433 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2024-11-28 05:24:19,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 05:24:19,433 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:19,433 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:19,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:24:19,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:19,634 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:19,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:19,635 INFO L85 PathProgramCache]: Analyzing trace with hash -181832145, now seen corresponding path program 1 times [2024-11-28 05:24:19,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:19,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945078141] [2024-11-28 05:24:19,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:19,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:20,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:20,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945078141] [2024-11-28 05:24:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945078141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:20,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491333991] [2024-11-28 05:24:20,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:20,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:20,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:20,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:20,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:24:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:20,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:24:20,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:20,661 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-28 05:24:20,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:20,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:24:20,767 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:24:20,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 05:24:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-28 05:24:20,801 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:20,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491333991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:20,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:24:20,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-11-28 05:24:20,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954323307] [2024-11-28 05:24:20,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:20,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:24:20,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:20,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:24:20,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=285, Unknown=1, NotChecked=34, Total=380 [2024-11-28 05:24:20,966 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:24:21,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:21,338 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2024-11-28 05:24:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:24:21,339 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 24 [2024-11-28 05:24:21,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:21,340 INFO L225 Difference]: With dead ends: 84 [2024-11-28 05:24:21,340 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 05:24:21,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=351, Unknown=1, NotChecked=38, Total=462 [2024-11-28 05:24:21,341 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 26 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:21,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 373 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 276 Invalid, 0 Unknown, 78 Unchecked, 0.3s Time] [2024-11-28 05:24:21,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 05:24:21,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2024-11-28 05:24:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 75 states have internal predecessors, (83), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2024-11-28 05:24:21,347 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 24 [2024-11-28 05:24:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:21,347 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2024-11-28 05:24:21,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:24:21,347 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2024-11-28 05:24:21,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 05:24:21,348 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:21,348 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:21,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:24:21,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:21,552 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:21,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:21,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1007696230, now seen corresponding path program 1 times [2024-11-28 05:24:21,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:21,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108755182] [2024-11-28 05:24:21,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:21,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:24:21,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:21,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108755182] [2024-11-28 05:24:21,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108755182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:21,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:21,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:24:21,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394439127] [2024-11-28 05:24:21,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:21,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:24:21,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:21,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:24:21,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:24:21,780 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:24:21,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:21,917 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2024-11-28 05:24:21,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:24:21,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-28 05:24:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:21,919 INFO L225 Difference]: With dead ends: 79 [2024-11-28 05:24:21,919 INFO L226 Difference]: Without dead ends: 79 [2024-11-28 05:24:21,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:24:21,919 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 9 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:21,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 203 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:24:21,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-28 05:24:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-28 05:24:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 74 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2024-11-28 05:24:21,925 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 27 [2024-11-28 05:24:21,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:21,925 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2024-11-28 05:24:21,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:24:21,925 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2024-11-28 05:24:21,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 05:24:21,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:21,926 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:21,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:24:21,927 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:21,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:21,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1007696229, now seen corresponding path program 1 times [2024-11-28 05:24:21,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:21,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306937069] [2024-11-28 05:24:21,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:21,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:24:22,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:22,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306937069] [2024-11-28 05:24:22,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306937069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:22,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:22,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:24:22,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714929041] [2024-11-28 05:24:22,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:22,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:24:22,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:22,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:24:22,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:24:22,264 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:24:22,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:22,395 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2024-11-28 05:24:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:24:22,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-28 05:24:22,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:22,396 INFO L225 Difference]: With dead ends: 78 [2024-11-28 05:24:22,396 INFO L226 Difference]: Without dead ends: 78 [2024-11-28 05:24:22,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:24:22,397 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 3 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:22,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 228 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:24:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-28 05:24:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-28 05:24:22,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 73 states have internal predecessors, (79), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:22,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2024-11-28 05:24:22,405 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 27 [2024-11-28 05:24:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:22,405 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2024-11-28 05:24:22,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:24:22,405 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2024-11-28 05:24:22,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 05:24:22,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:22,406 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] [2024-11-28 05:24:22,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:24:22,406 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:22,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:22,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1381084206, now seen corresponding path program 1 times [2024-11-28 05:24:22,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:22,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96335089] [2024-11-28 05:24:22,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:22,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:22,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:22,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96335089] [2024-11-28 05:24:22,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96335089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:22,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544692481] [2024-11-28 05:24:22,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:22,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:22,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:22,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:22,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:24:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:23,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-28 05:24:23,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:23,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:24:23,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:24:23,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:24:23,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:24:23,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:24:23,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:24:23,333 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-28 05:24:23,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 17 [2024-11-28 05:24:23,356 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-28 05:24:23,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 17 [2024-11-28 05:24:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:23,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:24,091 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 16 |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_479 (Array Int Int))) (or (not (= v_ArrVal_479 (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_479 .cse0)))) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_11| Int)) (or (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_479) |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_11|) 0) (< |v_ULTIMATE.start_loop_~node~0#1.offset_11| 0) (< |c_ULTIMATE.start_create_~dll~0#1.offset| |v_ULTIMATE.start_loop_~node~0#1.offset_11|))))) (forall ((v_ArrVal_478 Int) (|v_ULTIMATE.start_loop_~node~0#1.offset_11| Int)) (or (< |v_ULTIMATE.start_loop_~node~0#1.offset_11| 0) (< |c_ULTIMATE.start_create_~dll~0#1.offset| |v_ULTIMATE.start_loop_~node~0#1.offset_11|) (= (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 v_ArrVal_478)) |c_ULTIMATE.start_create_~dll~0#1.base|) |v_ULTIMATE.start_loop_~node~0#1.offset_11|) 0))))) is different from false [2024-11-28 05:24:24,807 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 10 treesize of output 8 [2024-11-28 05:24:24,816 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 14 treesize of output 12 [2024-11-28 05:24:24,825 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 10 treesize of output 8 [2024-11-28 05:24:24,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:24,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544692481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:24:24,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:24:24,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-11-28 05:24:24,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810093225] [2024-11-28 05:24:24,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:24,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 05:24:24,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:24,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 05:24:24,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=537, Unknown=1, NotChecked=46, Total=650 [2024-11-28 05:24:24,866 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:24:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:25,376 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2024-11-28 05:24:25,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:24:25,377 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2024-11-28 05:24:25,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:25,377 INFO L225 Difference]: With dead ends: 80 [2024-11-28 05:24:25,377 INFO L226 Difference]: Without dead ends: 80 [2024-11-28 05:24:25,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=725, Unknown=1, NotChecked=54, Total=870 [2024-11-28 05:24:25,379 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:25,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 689 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 39 Unchecked, 0.3s Time] [2024-11-28 05:24:25,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-28 05:24:25,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-28 05:24:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 61 states have (on average 1.3278688524590163) internal successors, (81), 75 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2024-11-28 05:24:25,383 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 26 [2024-11-28 05:24:25,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:25,383 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2024-11-28 05:24:25,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:24:25,384 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2024-11-28 05:24:25,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 05:24:25,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:25,384 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:25,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:24:25,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 05:24:25,588 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:25,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:25,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1381014563, now seen corresponding path program 1 times [2024-11-28 05:24:25,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:25,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133819404] [2024-11-28 05:24:25,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:25,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:24:25,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:25,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133819404] [2024-11-28 05:24:25,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133819404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:25,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:25,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:24:25,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858631309] [2024-11-28 05:24:25,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:25,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:24:25,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:25,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:24:25,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:24:25,714 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:25,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:25,888 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2024-11-28 05:24:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:24:25,889 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-28 05:24:25,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:25,890 INFO L225 Difference]: With dead ends: 82 [2024-11-28 05:24:25,890 INFO L226 Difference]: Without dead ends: 82 [2024-11-28 05:24:25,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:24:25,890 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:25,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 219 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:24:25,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-28 05:24:25,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-28 05:24:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.328125) internal successors, (85), 77 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:25,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2024-11-28 05:24:25,894 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 26 [2024-11-28 05:24:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:25,895 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2024-11-28 05:24:25,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:25,895 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2024-11-28 05:24:25,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 05:24:25,895 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:25,896 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:25,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:24:25,896 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:25,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:25,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1381014562, now seen corresponding path program 1 times [2024-11-28 05:24:25,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:25,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092481059] [2024-11-28 05:24:25,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:25,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:24:26,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:26,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092481059] [2024-11-28 05:24:26,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092481059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:26,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:26,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:24:26,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534679387] [2024-11-28 05:24:26,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:26,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:24:26,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:26,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:24:26,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:24:26,150 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:26,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:26,340 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2024-11-28 05:24:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:24:26,341 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-28 05:24:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:26,341 INFO L225 Difference]: With dead ends: 84 [2024-11-28 05:24:26,342 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 05:24:26,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:24:26,342 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 3 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:26,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 237 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:24:26,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 05:24:26,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-28 05:24:26,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.303030303030303) internal successors, (86), 79 states have internal predecessors, (86), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2024-11-28 05:24:26,346 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 26 [2024-11-28 05:24:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:26,346 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2024-11-28 05:24:26,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:26,347 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2024-11-28 05:24:26,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 05:24:26,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:26,348 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:26,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:24:26,348 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:26,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:26,348 INFO L85 PathProgramCache]: Analyzing trace with hash 138223906, now seen corresponding path program 1 times [2024-11-28 05:24:26,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:26,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949995255] [2024-11-28 05:24:26,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:26,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:24:26,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:26,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949995255] [2024-11-28 05:24:26,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949995255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:26,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:26,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:24:26,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246300692] [2024-11-28 05:24:26,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:26,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:24:26,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:26,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:24:26,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:24:26,451 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:26,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:26,540 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2024-11-28 05:24:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:24:26,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-28 05:24:26,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:26,541 INFO L225 Difference]: With dead ends: 91 [2024-11-28 05:24:26,541 INFO L226 Difference]: Without dead ends: 91 [2024-11-28 05:24:26,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:24:26,542 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 27 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:26,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 340 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:24:26,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-28 05:24:26,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2024-11-28 05:24:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 80 states have internal predecessors, (86), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2024-11-28 05:24:26,545 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 27 [2024-11-28 05:24:26,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:26,546 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2024-11-28 05:24:26,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:26,546 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2024-11-28 05:24:26,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 05:24:26,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:26,547 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:26,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:24:26,547 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:26,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:26,547 INFO L85 PathProgramCache]: Analyzing trace with hash -313055326, now seen corresponding path program 1 times [2024-11-28 05:24:26,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:26,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147504879] [2024-11-28 05:24:26,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:26,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:26,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:24:26,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:26,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147504879] [2024-11-28 05:24:26,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147504879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:26,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:26,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:24:26,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841657602] [2024-11-28 05:24:26,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:26,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:24:26,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:26,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:24:26,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:24:26,684 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:26,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:26,797 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2024-11-28 05:24:26,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:24:26,798 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-28 05:24:26,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:26,799 INFO L225 Difference]: With dead ends: 90 [2024-11-28 05:24:26,799 INFO L226 Difference]: Without dead ends: 90 [2024-11-28 05:24:26,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:24:26,799 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 23 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:26,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 308 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:24:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-28 05:24:26,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2024-11-28 05:24:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 84 states have internal predecessors, (93), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2024-11-28 05:24:26,803 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 29 [2024-11-28 05:24:26,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:26,804 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2024-11-28 05:24:26,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:26,804 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2024-11-28 05:24:26,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 05:24:26,805 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:26,805 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:26,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 05:24:26,805 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:26,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:26,806 INFO L85 PathProgramCache]: Analyzing trace with hash 589074652, now seen corresponding path program 1 times [2024-11-28 05:24:26,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:26,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650137931] [2024-11-28 05:24:26,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:26,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:27,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:27,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650137931] [2024-11-28 05:24:27,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650137931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:27,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366495438] [2024-11-28 05:24:27,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:27,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:27,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:27,129 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:27,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:24:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:27,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 05:24:27,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:27,299 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:24:27,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 05:24:27,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:24:27,354 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:24:27,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-28 05:24:27,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:24:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:27,394 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:24:27,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366495438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:27,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:24:27,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 14 [2024-11-28 05:24:27,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653712628] [2024-11-28 05:24:27,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:27,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:24:27,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:27,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:24:27,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-28 05:24:27,396 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:27,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:27,611 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2024-11-28 05:24:27,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:24:27,612 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-28 05:24:27,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:27,612 INFO L225 Difference]: With dead ends: 90 [2024-11-28 05:24:27,612 INFO L226 Difference]: Without dead ends: 90 [2024-11-28 05:24:27,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:24:27,613 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 26 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:27,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 281 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:24:27,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-28 05:24:27,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2024-11-28 05:24:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.295774647887324) internal successors, (92), 84 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:27,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2024-11-28 05:24:27,619 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 31 [2024-11-28 05:24:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:27,619 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2024-11-28 05:24:27,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2024-11-28 05:24:27,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 05:24:27,620 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:27,620 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:27,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:24:27,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 05:24:27,822 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:27,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:27,822 INFO L85 PathProgramCache]: Analyzing trace with hash 589074653, now seen corresponding path program 1 times [2024-11-28 05:24:27,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:27,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724805986] [2024-11-28 05:24:27,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:27,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:28,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724805986] [2024-11-28 05:24:28,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724805986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:28,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192856144] [2024-11-28 05:24:28,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:28,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:28,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:28,344 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:28,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:24:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:28,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 05:24:28,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:28,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 05:24:28,593 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:24:28,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 05:24:28,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:24:28,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:24:28,733 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:24:28,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 05:24:28,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:24:28,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:24:28,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:24:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:28,795 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:24:28,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192856144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:28,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:24:28,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 19 [2024-11-28 05:24:28,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342321172] [2024-11-28 05:24:28,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:28,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:24:28,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:28,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:24:28,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-11-28 05:24:28,797 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:29,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:29,061 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2024-11-28 05:24:29,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:24:29,061 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-28 05:24:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:29,063 INFO L225 Difference]: With dead ends: 89 [2024-11-28 05:24:29,063 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 05:24:29,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:24:29,064 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 21 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:29,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 262 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:24:29,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 05:24:29,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-28 05:24:29,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 84 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2024-11-28 05:24:29,071 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 31 [2024-11-28 05:24:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:29,071 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2024-11-28 05:24:29,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2024-11-28 05:24:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 05:24:29,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:29,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:29,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 05:24:29,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 05:24:29,276 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:29,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:29,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1857089563, now seen corresponding path program 1 times [2024-11-28 05:24:29,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:29,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707258958] [2024-11-28 05:24:29,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:29,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:29,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707258958] [2024-11-28 05:24:29,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707258958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294790247] [2024-11-28 05:24:29,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:29,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:29,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:29,533 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:29,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:24:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:29,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 05:24:29,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:29,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:29,940 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 15 treesize of output 15 [2024-11-28 05:24:29,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:29,948 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 15 treesize of output 15 [2024-11-28 05:24:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:30,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:30,290 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 05:24:30,291 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 24 treesize of output 23 [2024-11-28 05:24:30,303 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-28 05:24:30,303 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 12 [2024-11-28 05:24:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294790247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:24:30,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:24:30,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 16] total 27 [2024-11-28 05:24:30,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606061069] [2024-11-28 05:24:30,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:30,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 05:24:30,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:30,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 05:24:30,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2024-11-28 05:24:30,485 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 26 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:24:31,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:31,265 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2024-11-28 05:24:31,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 05:24:31,266 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 26 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-11-28 05:24:31,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:31,267 INFO L225 Difference]: With dead ends: 106 [2024-11-28 05:24:31,267 INFO L226 Difference]: Without dead ends: 106 [2024-11-28 05:24:31,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=1146, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 05:24:31,268 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 37 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:31,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 825 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:24:31,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-28 05:24:31,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2024-11-28 05:24:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 97 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2024-11-28 05:24:31,272 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 32 [2024-11-28 05:24:31,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:31,272 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2024-11-28 05:24:31,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 26 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:24:31,273 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2024-11-28 05:24:31,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 05:24:31,273 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:31,273 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:31,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:24:31,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:31,477 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:31,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:31,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1735199206, now seen corresponding path program 1 times [2024-11-28 05:24:31,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:31,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372831713] [2024-11-28 05:24:31,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:31,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:31,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:24:31,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:31,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372831713] [2024-11-28 05:24:31,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372831713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:31,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893692923] [2024-11-28 05:24:31,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:31,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:31,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:31,690 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:31,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:24:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:31,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 05:24:31,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:31,899 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 13 treesize of output 9 [2024-11-28 05:24:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:24:31,934 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:32,005 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_#t~ret4#1.base_17| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_#t~ret4#1.base_17|) 0)) (= (store |c_#valid| |v_ULTIMATE.start_create_#t~ret4#1.base_17| 0) |c_ULTIMATE.start_main_old_#valid#1|))) is different from false [2024-11-28 05:24:32,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893692923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:32,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:24:32,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 11 [2024-11-28 05:24:32,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7220433] [2024-11-28 05:24:32,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:32,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:24:32,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:32,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:24:32,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=111, Unknown=1, NotChecked=20, Total=156 [2024-11-28 05:24:32,008 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:32,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:32,243 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2024-11-28 05:24:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:24:32,243 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2024-11-28 05:24:32,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:32,244 INFO L225 Difference]: With dead ends: 107 [2024-11-28 05:24:32,244 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 05:24:32,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=111, Unknown=1, NotChecked=20, Total=156 [2024-11-28 05:24:32,244 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 289 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 [2024-11-28 05:24:32,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 289 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:24:32,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 05:24:32,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-28 05:24:32,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.352112676056338) internal successors, (96), 84 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:32,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2024-11-28 05:24:32,251 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 33 [2024-11-28 05:24:32,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:32,252 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2024-11-28 05:24:32,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:24:32,252 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2024-11-28 05:24:32,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 05:24:32,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:32,254 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:32,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:24:32,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:32,455 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:32,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:32,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1129031897, now seen corresponding path program 1 times [2024-11-28 05:24:32,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:32,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456132160] [2024-11-28 05:24:32,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:32,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 05:24:32,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:32,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456132160] [2024-11-28 05:24:32,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456132160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:32,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112402899] [2024-11-28 05:24:32,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:32,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:32,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:32,630 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:32,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:24:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:32,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 05:24:32,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:32,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 05:24:32,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:32,903 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 05:24:32,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2024-11-28 05:24:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 05:24:32,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112402899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:24:32,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:24:32,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2024-11-28 05:24:32,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47318354] [2024-11-28 05:24:32,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:32,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:24:32,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:32,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:24:32,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:24:32,929 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:33,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:33,036 INFO L93 Difference]: Finished difference Result 99 states and 115 transitions. [2024-11-28 05:24:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:24:33,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-28 05:24:33,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:33,038 INFO L225 Difference]: With dead ends: 99 [2024-11-28 05:24:33,038 INFO L226 Difference]: Without dead ends: 99 [2024-11-28 05:24:33,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:24:33,039 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 6 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:33,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 183 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:24:33,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-28 05:24:33,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2024-11-28 05:24:33,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.3375) internal successors, (107), 93 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:33,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2024-11-28 05:24:33,047 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 42 [2024-11-28 05:24:33,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:33,047 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2024-11-28 05:24:33,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:33,048 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2024-11-28 05:24:33,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 05:24:33,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:33,048 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:33,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:24:33,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:33,249 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:33,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:33,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1129031896, now seen corresponding path program 1 times [2024-11-28 05:24:33,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:33,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149430964] [2024-11-28 05:24:33,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:33,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:24:33,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:33,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149430964] [2024-11-28 05:24:33,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149430964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:33,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313173823] [2024-11-28 05:24:33,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:33,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:33,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:33,589 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:33,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:24:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:33,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 05:24:33,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:33,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 05:24:33,957 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-28 05:24:33,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:33,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:24:34,002 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:24:34,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 05:24:34,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-28 05:24:34,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:34,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313173823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:34,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:24:34,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2024-11-28 05:24:34,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768270225] [2024-11-28 05:24:34,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:34,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 05:24:34,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:34,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 05:24:34,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=533, Unknown=1, NotChecked=46, Total=650 [2024-11-28 05:24:34,438 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 18 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:24:34,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:34,901 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2024-11-28 05:24:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:24:34,902 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 18 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2024-11-28 05:24:34,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:34,903 INFO L225 Difference]: With dead ends: 99 [2024-11-28 05:24:34,903 INFO L226 Difference]: Without dead ends: 99 [2024-11-28 05:24:34,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=823, Unknown=1, NotChecked=58, Total=992 [2024-11-28 05:24:34,905 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 35 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:34,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 535 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 459 Invalid, 0 Unknown, 80 Unchecked, 0.3s Time] [2024-11-28 05:24:34,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-28 05:24:34,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2024-11-28 05:24:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.325) internal successors, (106), 93 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:34,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2024-11-28 05:24:34,909 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 42 [2024-11-28 05:24:34,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:34,909 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2024-11-28 05:24:34,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 18 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:24:34,909 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2024-11-28 05:24:34,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 05:24:34,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:34,910 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:34,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 05:24:35,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:35,114 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:35,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:35,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1204720632, now seen corresponding path program 1 times [2024-11-28 05:24:35,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:35,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663254198] [2024-11-28 05:24:35,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 05:24:35,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:35,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663254198] [2024-11-28 05:24:35,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663254198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:35,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749367744] [2024-11-28 05:24:35,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:35,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:35,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:35,805 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:35,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:24:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:35,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 05:24:35,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:36,045 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:24:36,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 05:24:36,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:24:36,131 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:24:36,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-28 05:24:36,186 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:24:36,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-28 05:24:36,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:24:36,213 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base 1))) is different from true [2024-11-28 05:24:36,234 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-28 05:24:36,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-28 05:24:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 6 not checked. [2024-11-28 05:24:36,245 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:36,388 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1387 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1387) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) 1)) is different from false [2024-11-28 05:24:36,396 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1387 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1387) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) 1)) is different from false [2024-11-28 05:24:36,411 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-28 05:24:36,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2024-11-28 05:24:36,417 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1387 (Array Int Int)) (v_ArrVal_1386 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1386))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1387)) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) |c_ULTIMATE.start_create_#t~mem8#1.base|)) is different from false [2024-11-28 05:24:36,423 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1387 (Array Int Int)) (v_ArrVal_1386 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (= .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1386))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1387)) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) is different from false [2024-11-28 05:24:36,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:36,433 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 29 [2024-11-28 05:24:36,436 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 136 treesize of output 112 [2024-11-28 05:24:36,444 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 11 treesize of output 9 [2024-11-28 05:24:36,447 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 22 treesize of output 16 [2024-11-28 05:24:36,542 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:36,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749367744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:24:36,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:24:36,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 14] total 31 [2024-11-28 05:24:36,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981184641] [2024-11-28 05:24:36,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:36,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 05:24:36,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:36,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 05:24:36,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=628, Unknown=5, NotChecked=270, Total=992 [2024-11-28 05:24:36,545 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand has 32 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 27 states have internal predecessors, (83), 3 states have call successors, (4), 4 states have call predecessors, (4), 7 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 05:24:37,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:37,023 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2024-11-28 05:24:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:24:37,024 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 27 states have internal predecessors, (83), 3 states have call successors, (4), 4 states have call predecessors, (4), 7 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 45 [2024-11-28 05:24:37,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:37,025 INFO L225 Difference]: With dead ends: 96 [2024-11-28 05:24:37,025 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 05:24:37,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=931, Unknown=5, NotChecked=330, Total=1406 [2024-11-28 05:24:37,026 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 25 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:37,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 601 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 459 Invalid, 0 Unknown, 195 Unchecked, 0.3s Time] [2024-11-28 05:24:37,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 05:24:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-28 05:24:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 80 states have (on average 1.3) internal successors, (104), 91 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2024-11-28 05:24:37,029 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 45 [2024-11-28 05:24:37,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:37,029 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2024-11-28 05:24:37,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 27 states have internal predecessors, (83), 3 states have call successors, (4), 4 states have call predecessors, (4), 7 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 05:24:37,030 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2024-11-28 05:24:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 05:24:37,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:37,030 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:37,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 05:24:37,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 05:24:37,234 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:37,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:37,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1204720631, now seen corresponding path program 1 times [2024-11-28 05:24:37,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:37,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205721742] [2024-11-28 05:24:37,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:37,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:38,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:38,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205721742] [2024-11-28 05:24:38,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205721742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:38,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249925944] [2024-11-28 05:24:38,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:38,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:38,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:38,313 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:38,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:24:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:38,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 05:24:38,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:38,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 05:24:38,594 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:24:38,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 05:24:38,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:24:38,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:24:38,662 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:24:38,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 52 [2024-11-28 05:24:38,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:24:38,769 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:24:38,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 52 [2024-11-28 05:24:38,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:24:38,801 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 34 treesize of output 18 [2024-11-28 05:24:38,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:24:38,840 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-28 05:24:38,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:38,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:24:38,882 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:24:38,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 05:24:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-28 05:24:38,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:39,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249925944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:39,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:24:39,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 22 [2024-11-28 05:24:39,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494584391] [2024-11-28 05:24:39,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:39,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:24:39,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:39,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:24:39,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=492, Unknown=1, NotChecked=44, Total=600 [2024-11-28 05:24:39,026 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 18 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 05:24:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:39,619 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2024-11-28 05:24:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 05:24:39,619 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 18 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 45 [2024-11-28 05:24:39,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:39,620 INFO L225 Difference]: With dead ends: 92 [2024-11-28 05:24:39,620 INFO L226 Difference]: Without dead ends: 92 [2024-11-28 05:24:39,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=1036, Unknown=1, NotChecked=66, Total=1260 [2024-11-28 05:24:39,621 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 33 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:39,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 490 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 449 Invalid, 0 Unknown, 62 Unchecked, 0.3s Time] [2024-11-28 05:24:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-28 05:24:39,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-28 05:24:39,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 80 states have (on average 1.25) internal successors, (100), 87 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:39,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2024-11-28 05:24:39,625 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 45 [2024-11-28 05:24:39,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:39,625 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2024-11-28 05:24:39,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 18 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 05:24:39,625 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2024-11-28 05:24:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 05:24:39,626 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:39,626 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:39,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:24:39,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 05:24:39,830 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:39,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:39,831 INFO L85 PathProgramCache]: Analyzing trace with hash -829408468, now seen corresponding path program 1 times [2024-11-28 05:24:39,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:39,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362215018] [2024-11-28 05:24:39,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:39,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:40,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:40,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362215018] [2024-11-28 05:24:40,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362215018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:40,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552631510] [2024-11-28 05:24:40,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:40,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:40,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:40,502 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:40,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:24:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:40,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-28 05:24:40,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:40,967 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:24:40,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 05:24:41,010 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 15 treesize of output 1 [2024-11-28 05:24:41,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:24:41,080 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 7 [2024-11-28 05:24:41,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:41,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2024-11-28 05:24:41,240 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:24:41,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-28 05:24:41,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:24:41,427 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:41,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:41,465 INFO L349 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2024-11-28 05:24:41,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 05:24:41,469 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1703 (Array Int Int))) (= |c_ULTIMATE.start_create_#t~mem9#1.base| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1703) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) is different from false [2024-11-28 05:24:41,815 INFO L349 Elim1Store]: treesize reduction 17, result has 69.6 percent of original size [2024-11-28 05:24:41,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 94 [2024-11-28 05:24:41,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:41,834 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 444 treesize of output 439 [2024-11-28 05:24:41,857 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 196 treesize of output 186 [2024-11-28 05:24:41,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:41,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 191 treesize of output 161 [2024-11-28 05:24:42,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552631510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:42,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:24:42,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34 [2024-11-28 05:24:42,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389821145] [2024-11-28 05:24:42,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:42,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 05:24:42,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:42,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 05:24:42,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1338, Unknown=30, NotChecked=74, Total=1560 [2024-11-28 05:24:42,378 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 30 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:24:43,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:43,147 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2024-11-28 05:24:43,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:24:43,148 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 30 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2024-11-28 05:24:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:43,149 INFO L225 Difference]: With dead ends: 98 [2024-11-28 05:24:43,149 INFO L226 Difference]: Without dead ends: 98 [2024-11-28 05:24:43,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=195, Invalid=1847, Unknown=32, NotChecked=88, Total=2162 [2024-11-28 05:24:43,150 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 26 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:43,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 819 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:24:43,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-28 05:24:43,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2024-11-28 05:24:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 85 states have (on average 1.2588235294117647) internal successors, (107), 92 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2024-11-28 05:24:43,154 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 47 [2024-11-28 05:24:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:43,155 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2024-11-28 05:24:43,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 30 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:24:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2024-11-28 05:24:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 05:24:43,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:43,156 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:43,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 05:24:43,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 05:24:43,359 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:43,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:43,360 INFO L85 PathProgramCache]: Analyzing trace with hash -829408467, now seen corresponding path program 1 times [2024-11-28 05:24:43,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:43,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914233978] [2024-11-28 05:24:43,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:43,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:44,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:44,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914233978] [2024-11-28 05:24:44,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914233978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:44,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426216853] [2024-11-28 05:24:44,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:44,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:44,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:44,243 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:44,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:24:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:44,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-28 05:24:44,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:44,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 05:24:44,604 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:24:44,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 05:24:44,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:24:44,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:24:44,777 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:24:44,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 05:24:44,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:24:44,871 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:24:44,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 05:24:44,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:24:45,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:24:45,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:24:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:45,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:45,350 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1839 (Array Int Int)) (v_ArrVal_1838 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1839) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1838) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))) (forall ((v_ArrVal_1839 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1839) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))) is different from false [2024-11-28 05:24:45,367 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_1839 (Array Int Int)) (v_ArrVal_1838 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1839) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1838) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))) (forall ((v_ArrVal_1839 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1839) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) is different from false [2024-11-28 05:24:45,392 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1839 (Array Int Int)) (v_ArrVal_1838 (Array Int Int)) (v_ArrVal_1837 (Array Int Int)) (v_ArrVal_1836 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1836))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (<= (+ 8 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1837) .cse0 v_ArrVal_1839) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_1838) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))))) (forall ((v_ArrVal_1839 (Array Int Int)) (v_ArrVal_1837 (Array Int Int)) (v_ArrVal_1836 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1837) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1836) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1839) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))) is different from false [2024-11-28 05:24:45,407 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_1839 (Array Int Int)) (v_ArrVal_1838 (Array Int Int)) (v_ArrVal_1837 (Array Int Int)) (v_ArrVal_1836 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1836))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (<= (+ 8 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1837) .cse1 v_ArrVal_1839) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1838) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))))) (forall ((v_ArrVal_1839 (Array Int Int)) (v_ArrVal_1837 (Array Int Int)) (v_ArrVal_1836 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1837) (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1836) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1839) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) is different from false [2024-11-28 05:24:45,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:45,425 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2024-11-28 05:24:45,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:45,432 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2024-11-28 05:24:45,436 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 54 treesize of output 46 [2024-11-28 05:24:45,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:45,447 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 100 treesize of output 99 [2024-11-28 05:24:45,453 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 60 treesize of output 52 [2024-11-28 05:24:45,460 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 76 treesize of output 70 [2024-11-28 05:24:45,466 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 48 treesize of output 46 [2024-11-28 05:24:45,533 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:45,533 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2024-11-28 05:24:45,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:45,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2024-11-28 05:24:45,546 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:24:45,547 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:24:45,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 50 [2024-11-28 05:24:45,553 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:24:45,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-28 05:24:45,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426216853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:45,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:24:45,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 30 [2024-11-28 05:24:45,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077193928] [2024-11-28 05:24:45,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:45,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 05:24:45,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:45,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 05:24:45,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1286, Unknown=4, NotChecked=300, Total=1722 [2024-11-28 05:24:45,724 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand has 31 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 27 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 05:24:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:46,330 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2024-11-28 05:24:46,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:24:46,330 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 27 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-11-28 05:24:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:46,331 INFO L225 Difference]: With dead ends: 98 [2024-11-28 05:24:46,331 INFO L226 Difference]: Without dead ends: 98 [2024-11-28 05:24:46,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=201, Invalid=1881, Unknown=4, NotChecked=364, Total=2450 [2024-11-28 05:24:46,332 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:46,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 632 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:24:46,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-28 05:24:46,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2024-11-28 05:24:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 92 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2024-11-28 05:24:46,337 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 47 [2024-11-28 05:24:46,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:46,337 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2024-11-28 05:24:46,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 27 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 05:24:46,337 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2024-11-28 05:24:46,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 05:24:46,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:46,342 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:46,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 05:24:46,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 05:24:46,543 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:46,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:46,543 INFO L85 PathProgramCache]: Analyzing trace with hash -829338825, now seen corresponding path program 1 times [2024-11-28 05:24:46,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:46,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868357181] [2024-11-28 05:24:46,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:46,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 05:24:46,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:46,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868357181] [2024-11-28 05:24:46,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868357181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:46,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102469184] [2024-11-28 05:24:46,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:46,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:46,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:46,693 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:46,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:24:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:46,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 05:24:46,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 05:24:46,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:47,015 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 05:24:47,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2024-11-28 05:24:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 05:24:47,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102469184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:24:47,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:24:47,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 8 [2024-11-28 05:24:47,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958284412] [2024-11-28 05:24:47,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:47,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:24:47,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:47,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:24:47,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:24:47,043 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:47,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:47,181 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2024-11-28 05:24:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:24:47,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2024-11-28 05:24:47,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:47,183 INFO L225 Difference]: With dead ends: 111 [2024-11-28 05:24:47,183 INFO L226 Difference]: Without dead ends: 111 [2024-11-28 05:24:47,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:24:47,184 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 16 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:47,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 189 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:24:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-28 05:24:47,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2024-11-28 05:24:47,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 96 states have (on average 1.2708333333333333) internal successors, (122), 103 states have internal predecessors, (122), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:47,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 128 transitions. [2024-11-28 05:24:47,188 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 128 transitions. Word has length 47 [2024-11-28 05:24:47,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:47,189 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 128 transitions. [2024-11-28 05:24:47,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:24:47,189 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 128 transitions. [2024-11-28 05:24:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 05:24:47,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:47,189 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:47,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 05:24:47,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 05:24:47,393 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:47,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:47,394 INFO L85 PathProgramCache]: Analyzing trace with hash -829338824, now seen corresponding path program 1 times [2024-11-28 05:24:47,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:47,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37663608] [2024-11-28 05:24:47,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:47,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:24:47,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:47,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37663608] [2024-11-28 05:24:47,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37663608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:47,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552980795] [2024-11-28 05:24:47,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:47,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:47,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:47,619 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:47,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 05:24:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:47,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 05:24:47,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 05:24:48,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:48,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:48,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2024-11-28 05:24:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 05:24:48,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552980795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:24:48,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:24:48,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 20 [2024-11-28 05:24:48,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979170258] [2024-11-28 05:24:48,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:48,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 05:24:48,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:48,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 05:24:48,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:24:48,336 INFO L87 Difference]: Start difference. First operand 108 states and 128 transitions. Second operand has 21 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 05:24:48,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:48,650 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2024-11-28 05:24:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:24:48,650 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 47 [2024-11-28 05:24:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:48,651 INFO L225 Difference]: With dead ends: 111 [2024-11-28 05:24:48,651 INFO L226 Difference]: Without dead ends: 111 [2024-11-28 05:24:48,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2024-11-28 05:24:48,651 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 39 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:48,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 375 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:24:48,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-28 05:24:48,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2024-11-28 05:24:48,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 103 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:48,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2024-11-28 05:24:48,655 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 47 [2024-11-28 05:24:48,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:48,656 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2024-11-28 05:24:48,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 05:24:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2024-11-28 05:24:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 05:24:48,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:48,657 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:48,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 05:24:48,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 05:24:48,860 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:48,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:48,861 INFO L85 PathProgramCache]: Analyzing trace with hash 803680707, now seen corresponding path program 1 times [2024-11-28 05:24:48,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:48,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138727896] [2024-11-28 05:24:48,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:48,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 05:24:49,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:49,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138727896] [2024-11-28 05:24:49,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138727896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:49,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269327972] [2024-11-28 05:24:49,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:49,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:49,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:49,788 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:49,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 05:24:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:50,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-28 05:24:50,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:50,053 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:24:50,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 05:24:50,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:24:50,072 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:24:50,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-11-28 05:24:50,126 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:24:50,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-28 05:24:50,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:24:50,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 05:24:50,184 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:24:50,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 05:24:50,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:24:50,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:24:50,256 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:24:50,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 05:24:50,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:24:50,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:24:50,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:24:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 05:24:50,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:50,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:50,541 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2024-11-28 05:24:50,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:50,547 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-28 05:24:50,551 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 52 treesize of output 44 [2024-11-28 05:24:50,557 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 82 treesize of output 70 [2024-11-28 05:24:50,561 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 11 treesize of output 9 [2024-11-28 05:24:50,563 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 9 treesize of output 7 [2024-11-28 05:24:50,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:50,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2024-11-28 05:24:50,573 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:24:50,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-28 05:24:50,947 INFO L349 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2024-11-28 05:24:50,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2024-11-28 05:24:51,029 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2293 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_2293) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) |c_ULTIMATE.start_create_~now~0#1.base|))) is different from false [2024-11-28 05:24:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2024-11-28 05:24:51,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269327972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:24:51,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:24:51,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 18] total 37 [2024-11-28 05:24:51,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637971610] [2024-11-28 05:24:51,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:51,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 05:24:51,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:51,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 05:24:51,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1191, Unknown=33, NotChecked=70, Total=1406 [2024-11-28 05:24:51,125 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand has 38 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 32 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 05:24:51,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:51,718 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2024-11-28 05:24:51,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:24:51,719 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 32 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 52 [2024-11-28 05:24:51,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:51,719 INFO L225 Difference]: With dead ends: 107 [2024-11-28 05:24:51,719 INFO L226 Difference]: Without dead ends: 107 [2024-11-28 05:24:51,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 87 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=187, Invalid=1676, Unknown=33, NotChecked=84, Total=1980 [2024-11-28 05:24:51,721 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 26 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:51,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 637 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 416 Invalid, 0 Unknown, 28 Unchecked, 0.4s Time] [2024-11-28 05:24:51,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-28 05:24:51,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-28 05:24:51,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 102 states have internal predecessors, (115), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:24:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2024-11-28 05:24:51,732 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 52 [2024-11-28 05:24:51,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:51,732 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2024-11-28 05:24:51,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 32 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 05:24:51,733 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2024-11-28 05:24:51,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 05:24:51,733 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:51,733 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:51,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 05:24:51,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 05:24:51,934 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:24:51,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:51,934 INFO L85 PathProgramCache]: Analyzing trace with hash -955575737, now seen corresponding path program 2 times [2024-11-28 05:24:51,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:51,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028731744] [2024-11-28 05:24:51,934 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:24:51,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:51,966 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:24:51,967 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:24:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:53,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:53,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028731744] [2024-11-28 05:24:53,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028731744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:53,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476037671] [2024-11-28 05:24:53,739 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:24:53,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:53,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:53,741 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:53,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 05:24:53,997 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:24:53,997 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:24:54,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-28 05:24:54,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:54,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:24:54,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:24:54,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:24:54,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:24:54,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:24:54,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:24:54,165 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:24:54,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 05:24:54,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-28 05:24:54,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-28 05:24:54,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:54,380 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2024-11-28 05:24:54,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 54 [2024-11-28 05:24:54,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:54,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2024-11-28 05:24:54,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:54,667 INFO L349 Elim1Store]: treesize reduction 72, result has 22.6 percent of original size [2024-11-28 05:24:54,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 111 treesize of output 83 [2024-11-28 05:24:54,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:54,687 INFO L349 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2024-11-28 05:24:54,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 45 [2024-11-28 05:24:55,129 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 05:24:55,130 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 18 [2024-11-28 05:24:55,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 05:24:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:55,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:55,815 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base|)) (.cse3 (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base|)) (.cse1 (+ 16 |c_ULTIMATE.start_create_#t~mem9#1.offset|))) (and (forall ((v_ArrVal_2450 (Array Int Int))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_2450 .cse1)) v_ArrVal_2450)) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_38| Int) (v_ArrVal_2451 Int)) (let ((.cse2 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_2450))) (or (< (select (select .cse2 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_38| 0) (= (select (select .cse2 (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| (store .cse3 .cse1 v_ArrVal_2451)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) 0)))))) (forall ((v_ArrVal_2450 (Array Int Int))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_2450 .cse1)) v_ArrVal_2450)) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_38| Int) (v_ArrVal_2451 Int)) (or (< (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_2450) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) (= (select (let ((.cse4 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| (store .cse3 .cse1 v_ArrVal_2451)))) (select .cse4 (select (select .cse4 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) 0) (< |v_ULTIMATE.start_loop_~node~0#1.offset_38| 0))))))) is different from false [2024-11-28 05:24:55,898 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse4 (select |c_#memory_$Pointer$#0.base| .cse3)) (.cse0 (select |c_#memory_$Pointer$#0.offset| .cse3)) (.cse1 (+ 16 (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (and (forall ((v_ArrVal_2450 (Array Int Int))) (or (not (= v_ArrVal_2450 (store .cse0 .cse1 (select v_ArrVal_2450 .cse1)))) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_38| Int) (v_ArrVal_2451 Int)) (let ((.cse2 (store |c_#memory_$Pointer$#0.offset| .cse3 v_ArrVal_2450))) (or (< (select (select .cse2 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) (= (select (select .cse2 (select (select (store |c_#memory_$Pointer$#0.base| .cse3 (store .cse4 .cse1 v_ArrVal_2451)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) 0) (< |v_ULTIMATE.start_loop_~node~0#1.offset_38| 0)))))) (forall ((v_ArrVal_2450 (Array Int Int))) (or (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_38| Int) (v_ArrVal_2451 Int)) (or (= (select (let ((.cse5 (store |c_#memory_$Pointer$#0.base| .cse3 (store .cse4 .cse1 v_ArrVal_2451)))) (select .cse5 (select (select .cse5 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) 0) (< (select (select (store |c_#memory_$Pointer$#0.offset| .cse3 v_ArrVal_2450) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_38| 0))) (not (= v_ArrVal_2450 (store .cse0 .cse1 (select v_ArrVal_2450 .cse1))))))))) is different from false [2024-11-28 05:24:56,019 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse8 (+ |c_ULTIMATE.start_create_#t~mem8#1.offset| 8))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base|) .cse8 |c_ULTIMATE.start_create_~now~0#1.base|)))) (let ((.cse6 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base|) .cse8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (.cse4 (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse0 (select .cse6 .cse4)) (.cse5 (select .cse3 .cse4)) (.cse1 (+ (select (select .cse6 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) 16))) (and (forall ((v_ArrVal_2450 (Array Int Int))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_2450 .cse1)) v_ArrVal_2450)) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_38| Int) (v_ArrVal_2451 Int)) (let ((.cse2 (store .cse6 .cse4 v_ArrVal_2450))) (or (= (select (select .cse2 (select (select (store .cse3 .cse4 (store .cse5 .cse1 v_ArrVal_2451)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) 0) (< (select (select .cse2 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_38| 0)))))) (forall ((v_ArrVal_2450 (Array Int Int))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_2450 .cse1)) v_ArrVal_2450)) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_38| Int) (v_ArrVal_2451 Int)) (or (< (select (select (store .cse6 .cse4 v_ArrVal_2450) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_38| 0) (= (select (let ((.cse7 (store .cse3 .cse4 (store .cse5 .cse1 v_ArrVal_2451)))) (select .cse7 (select (select .cse7 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) 0)))))))))) is different from false [2024-11-28 05:24:56,115 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse8 (select |c_#memory_$Pointer$#0.base| .cse5)) (.cse6 (select |c_#memory_$Pointer$#0.offset| .cse5)) (.cse9 (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_create_#t~mem8#1.offset_38| Int)) (or (forall ((v_ArrVal_2450 (Array Int Int))) (let ((.cse7 (+ 8 |v_ULTIMATE.start_create_#t~mem8#1.offset_38|))) (let ((.cse4 (store |c_#memory_$Pointer$#0.base| .cse5 (store .cse8 .cse7 |c_ULTIMATE.start_create_~now~0#1.base|))) (.cse0 (store |c_#memory_$Pointer$#0.offset| .cse5 (store .cse6 .cse7 |c_ULTIMATE.start_create_~now~0#1.offset|)))) (let ((.cse2 (+ 16 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (.cse1 (select (select .cse4 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (or (not (= (store (select .cse0 .cse1) .cse2 (select v_ArrVal_2450 .cse2)) v_ArrVal_2450)) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_38| Int) (v_ArrVal_2451 Int)) (or (= (select (let ((.cse3 (store .cse4 .cse1 (store (select .cse4 .cse1) .cse2 v_ArrVal_2451)))) (select .cse3 (select (select .cse3 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) 0) (< (select (select (store .cse0 .cse1 v_ArrVal_2450) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_38| 0)))))))) (< |v_ULTIMATE.start_create_#t~mem8#1.offset_38| .cse9))) (forall ((|v_ULTIMATE.start_create_#t~mem8#1.offset_38| Int)) (or (forall ((v_ArrVal_2450 (Array Int Int))) (let ((.cse15 (+ 8 |v_ULTIMATE.start_create_#t~mem8#1.offset_38|))) (let ((.cse14 (store |c_#memory_$Pointer$#0.offset| .cse5 (store .cse6 .cse15 |c_ULTIMATE.start_create_~now~0#1.offset|))) (.cse11 (store |c_#memory_$Pointer$#0.base| .cse5 (store .cse8 .cse15 |c_ULTIMATE.start_create_~now~0#1.base|)))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (.cse13 (+ 16 (select (select .cse14 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (or (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_38| Int) (v_ArrVal_2451 Int)) (let ((.cse10 (store .cse14 .cse12 v_ArrVal_2450))) (or (= (select (select .cse10 (select (select (store .cse11 .cse12 (store (select .cse11 .cse12) .cse13 v_ArrVal_2451)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) 0) (< (select (select .cse10 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) (< |v_ULTIMATE.start_loop_~node~0#1.offset_38| 0)))) (not (= (store (select .cse14 .cse12) .cse13 (select v_ArrVal_2450 .cse13)) v_ArrVal_2450))))))) (< |v_ULTIMATE.start_create_#t~mem8#1.offset_38| .cse9)))))) is different from false [2024-11-28 05:24:56,315 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |c_ULTIMATE.start_create_#t~ret7#1.base|))) (.cse8 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |c_ULTIMATE.start_create_#t~ret7#1.offset|)))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_create_#t~ret7#1.base|)) (.cse6 (select .cse5 |c_ULTIMATE.start_create_#t~ret7#1.base|))) (and (forall ((|v_ULTIMATE.start_create_#t~mem8#1.offset_38| Int)) (or (forall ((v_ArrVal_2450 (Array Int Int))) (let ((.cse7 (+ 8 |v_ULTIMATE.start_create_#t~mem8#1.offset_38|))) (let ((.cse0 (store .cse8 |c_ULTIMATE.start_create_#t~ret7#1.base| (store .cse9 .cse7 |c_ULTIMATE.start_create_~now~0#1.offset|))) (.cse4 (store .cse5 |c_ULTIMATE.start_create_#t~ret7#1.base| (store .cse6 .cse7 |c_ULTIMATE.start_create_~now~0#1.base|)))) (let ((.cse1 (select (select .cse4 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (.cse2 (+ 16 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (or (not (= v_ArrVal_2450 (store (select .cse0 .cse1) .cse2 (select v_ArrVal_2450 .cse2)))) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_38| Int) (v_ArrVal_2451 Int)) (or (< (select (select (store .cse0 .cse1 v_ArrVal_2450) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) (= (select (let ((.cse3 (store .cse4 .cse1 (store (select .cse4 .cse1) .cse2 v_ArrVal_2451)))) (select .cse3 (select (select .cse3 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) 0) (< |v_ULTIMATE.start_loop_~node~0#1.offset_38| 0)))))))) (< |v_ULTIMATE.start_create_#t~mem8#1.offset_38| |c_ULTIMATE.start_create_#t~ret7#1.offset|))) (forall ((|v_ULTIMATE.start_create_#t~mem8#1.offset_38| Int)) (or (forall ((v_ArrVal_2450 (Array Int Int))) (let ((.cse15 (+ 8 |v_ULTIMATE.start_create_#t~mem8#1.offset_38|))) (let ((.cse14 (store .cse5 |c_ULTIMATE.start_create_#t~ret7#1.base| (store .cse6 .cse15 |c_ULTIMATE.start_create_~now~0#1.base|))) (.cse10 (store .cse8 |c_ULTIMATE.start_create_#t~ret7#1.base| (store .cse9 .cse15 |c_ULTIMATE.start_create_~now~0#1.offset|)))) (let ((.cse12 (+ 16 (select (select .cse10 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (.cse11 (select (select .cse14 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (or (not (= v_ArrVal_2450 (store (select .cse10 .cse11) .cse12 (select v_ArrVal_2450 .cse12)))) (forall ((|v_ULTIMATE.start_loop_~node~0#1.offset_38| Int) (v_ArrVal_2451 Int)) (let ((.cse13 (store .cse10 .cse11 v_ArrVal_2450))) (or (< (select (select .cse13 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) (= (select (select .cse13 (select (select (store .cse14 .cse11 (store (select .cse14 .cse11) .cse12 v_ArrVal_2451)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) |v_ULTIMATE.start_loop_~node~0#1.offset_38|) 0) (< |v_ULTIMATE.start_loop_~node~0#1.offset_38| 0))))))))) (< |v_ULTIMATE.start_create_#t~mem8#1.offset_38| |c_ULTIMATE.start_create_#t~ret7#1.offset|)))))) is different from false [2024-11-28 05:24:57,862 INFO L349 Elim1Store]: treesize reduction 1429, result has 26.4 percent of original size [2024-11-28 05:24:57,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 50829 treesize of output 43097 [2024-11-28 05:25:03,765 INFO L349 Elim1Store]: treesize reduction 1003, result has 21.4 percent of original size [2024-11-28 05:25:03,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 30 new quantified variables, introduced 121 case distinctions, treesize of input 1431821 treesize of output 731444 [2024-11-28 05:25:26,046 WARN L286 SmtUtils]: Spent 22.27s on a formula simplification. DAG size of input: 2970 DAG size of output: 1585 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:25:33,065 INFO L349 Elim1Store]: treesize reduction 1316, result has 23.4 percent of original size [2024-11-28 05:25:33,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 16 new quantified variables, introduced 79 case distinctions, treesize of input 205284 treesize of output 188475 [2024-11-28 05:25:39,413 INFO L349 Elim1Store]: treesize reduction 380, result has 55.3 percent of original size [2024-11-28 05:25:39,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 14 new quantified variables, introduced 55 case distinctions, treesize of input 185685 treesize of output 182120 [2024-11-28 05:25:44,137 INFO L224 Elim1Store]: Index analysis took 104 ms [2024-11-28 05:25:47,151 INFO L349 Elim1Store]: treesize reduction 1202, result has 23.0 percent of original size [2024-11-28 05:25:47,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 19 new quantified variables, introduced 92 case distinctions, treesize of input 186904 treesize of output 141017 [2024-11-28 05:26:00,056 WARN L286 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 307 DAG size of output: 279 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 05:26:00,056 INFO L349 Elim1Store]: treesize reduction 123, result has 87.3 percent of original size [2024-11-28 05:26:00,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 17 new quantified variables, introduced 66 case distinctions, treesize of input 190434 treesize of output 144571 [2024-11-28 05:28:54,154 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 05:28:54,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 05:28:54,155 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-28 05:28:54,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 05:28:54,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:54,357 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:360) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 68 more [2024-11-28 05:28:54,363 INFO L158 Benchmark]: Toolchain (without parser) took 279941.31ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 116.5MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-28 05:28:54,363 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:28:54,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.27ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 97.4MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 05:28:54,364 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.09ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 96.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:28:54,365 INFO L158 Benchmark]: Boogie Preprocessor took 44.64ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 93.8MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:28:54,365 INFO L158 Benchmark]: RCFGBuilder took 510.09ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 76.0MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 05:28:54,365 INFO L158 Benchmark]: TraceAbstraction took 278905.37ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 75.6MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-11-28 05:28:54,366 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 433.27ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 97.4MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.09ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 96.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.64ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 93.8MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 510.09ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 76.0MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 278905.37ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 75.6MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/dll-fst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0c43b1e86d53f0a623ddcdf970bae6b5fd24ed69ec4a9688050aa705dc6cf897 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:28:57,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:28:57,310 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2024-11-28 05:28:57,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:28:57,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:28:57,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:28:57,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:28:57,375 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:28:57,376 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:28:57,377 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:28:57,378 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:28:57,378 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:28:57,378 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:28:57,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:28:57,380 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:28:57,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:28:57,380 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:28:57,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:28:57,381 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:28:57,381 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:28:57,381 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:28:57,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:28:57,381 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:28:57,381 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 05:28:57,381 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 05:28:57,381 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:28:57,381 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:28:57,381 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:28:57,382 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:28:57,382 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:28:57,382 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:28:57,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:28:57,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:28:57,382 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:28:57,382 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:28:57,382 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:28:57,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:28:57,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:28:57,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:28:57,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:28:57,383 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 05:28:57,383 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 05:28:57,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:28:57,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:28:57,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:28:57,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:28:57,383 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_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c43b1e86d53f0a623ddcdf970bae6b5fd24ed69ec4a9688050aa705dc6cf897 [2024-11-28 05:28:57,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:28:57,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:28:57,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:28:57,805 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:28:57,806 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:28:57,809 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/memsafety-broom/dll-fst-data.i [2024-11-28 05:29:01,009 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/data/62bee4fdf/5f65414182164cb2b7b02b431cb5a7d2/FLAGad276975c [2024-11-28 05:29:01,434 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:29:01,435 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/sv-benchmarks/c/memsafety-broom/dll-fst-data.i [2024-11-28 05:29:01,477 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/data/62bee4fdf/5f65414182164cb2b7b02b431cb5a7d2/FLAGad276975c [2024-11-28 05:29:01,502 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/data/62bee4fdf/5f65414182164cb2b7b02b431cb5a7d2 [2024-11-28 05:29:01,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:29:01,509 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:29:01,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:29:01,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:29:01,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:29:01,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:29:01" (1/1) ... [2024-11-28 05:29:01,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4238058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:01, skipping insertion in model container [2024-11-28 05:29:01,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:29:01" (1/1) ... [2024-11-28 05:29:01,615 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:29:02,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:29:02,015 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:29:02,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:29:02,143 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:29:02,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02 WrapperNode [2024-11-28 05:29:02,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:29:02,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:29:02,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:29:02,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:29:02,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (1/1) ... [2024-11-28 05:29:02,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (1/1) ... [2024-11-28 05:29:02,195 INFO L138 Inliner]: procedures = 122, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 64 [2024-11-28 05:29:02,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:29:02,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:29:02,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:29:02,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:29:02,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (1/1) ... [2024-11-28 05:29:02,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (1/1) ... [2024-11-28 05:29:02,210 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (1/1) ... [2024-11-28 05:29:02,230 INFO L175 MemorySlicer]: Split 12 memory accesses to 1 slices as follows [12]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 7 writes are split as follows [7]. [2024-11-28 05:29:02,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (1/1) ... [2024-11-28 05:29:02,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (1/1) ... [2024-11-28 05:29:02,242 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (1/1) ... [2024-11-28 05:29:02,243 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (1/1) ... [2024-11-28 05:29:02,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (1/1) ... [2024-11-28 05:29:02,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (1/1) ... [2024-11-28 05:29:02,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (1/1) ... [2024-11-28 05:29:02,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:29:02,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:29:02,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:29:02,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:29:02,256 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (1/1) ... [2024-11-28 05:29:02,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:29:02,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:02,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:29:02,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:29:02,334 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-28 05:29:02,335 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-28 05:29:02,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:29:02,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 05:29:02,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 05:29:02,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:29:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 05:29:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:29:02,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:29:02,472 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:29:02,474 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:29:03,105 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2024-11-28 05:29:03,105 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:29:03,123 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:29:03,124 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 05:29:03,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:29:03 BoogieIcfgContainer [2024-11-28 05:29:03,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:29:03,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:29:03,127 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:29:03,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:29:03,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:29:01" (1/3) ... [2024-11-28 05:29:03,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152fe163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:29:03, skipping insertion in model container [2024-11-28 05:29:03,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:29:02" (2/3) ... [2024-11-28 05:29:03,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152fe163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:29:03, skipping insertion in model container [2024-11-28 05:29:03,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:29:03" (3/3) ... [2024-11-28 05:29:03,135 INFO L128 eAbstractionObserver]: Analyzing ICFG dll-fst-data.i [2024-11-28 05:29:03,151 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:29:03,154 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll-fst-data.i that has 2 procedures, 73 locations, 1 initial locations, 3 loop locations, and 28 error locations. [2024-11-28 05:29:03,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:29:03,210 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;@61fc217b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:29:03,210 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-28 05:29:03,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 41 states have (on average 1.829268292682927) internal successors, (75), 69 states have internal predecessors, (75), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:03,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-28 05:29:03,221 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:03,221 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 05:29:03,222 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:03,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:03,230 INFO L85 PathProgramCache]: Analyzing trace with hash 40232267, now seen corresponding path program 1 times [2024-11-28 05:29:03,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:03,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430721147] [2024-11-28 05:29:03,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:03,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:03,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:03,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:03,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:29:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:03,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:29:03,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:03,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:29:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:03,468 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:03,469 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:03,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430721147] [2024-11-28 05:29:03,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430721147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:03,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:03,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:29:03,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260825973] [2024-11-28 05:29:03,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:03,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:29:03,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:03,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:29:03,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:29:03,510 INFO L87 Difference]: Start difference. First operand has 73 states, 41 states have (on average 1.829268292682927) internal successors, (75), 69 states have internal predecessors, (75), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:29:03,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:03,775 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2024-11-28 05:29:03,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:29:03,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-28 05:29:03,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:03,785 INFO L225 Difference]: With dead ends: 70 [2024-11-28 05:29:03,786 INFO L226 Difference]: Without dead ends: 68 [2024-11-28 05:29:03,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:29:03,793 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 3 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:03,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:29:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-28 05:29:03,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-28 05:29:03,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 40 states have (on average 1.675) internal successors, (67), 64 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:03,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2024-11-28 05:29:03,848 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 5 [2024-11-28 05:29:03,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:03,851 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2024-11-28 05:29:03,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:29:03,852 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2024-11-28 05:29:03,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-28 05:29:03,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:03,852 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 05:29:03,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:29:04,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:04,053 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:04,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:04,054 INFO L85 PathProgramCache]: Analyzing trace with hash 40232268, now seen corresponding path program 1 times [2024-11-28 05:29:04,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:04,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071622209] [2024-11-28 05:29:04,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:04,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:04,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:04,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:04,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:29:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:04,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:29:04,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:04,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:29:04,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:04,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:04,192 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:04,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071622209] [2024-11-28 05:29:04,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071622209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:04,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:04,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:29:04,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667179995] [2024-11-28 05:29:04,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:04,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:29:04,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:04,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:29:04,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:29:04,197 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:29:04,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:04,467 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2024-11-28 05:29:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:29:04,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-28 05:29:04,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:04,470 INFO L225 Difference]: With dead ends: 65 [2024-11-28 05:29:04,470 INFO L226 Difference]: Without dead ends: 65 [2024-11-28 05:29:04,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:29:04,471 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:04,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 109 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:29:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-28 05:29:04,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-28 05:29:04,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 40 states have (on average 1.6) internal successors, (64), 61 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2024-11-28 05:29:04,481 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 5 [2024-11-28 05:29:04,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:04,481 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2024-11-28 05:29:04,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:29:04,482 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2024-11-28 05:29:04,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:29:04,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:04,482 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:04,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:29:04,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:04,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:04,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:04,684 INFO L85 PathProgramCache]: Analyzing trace with hash -967584991, now seen corresponding path program 1 times [2024-11-28 05:29:04,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:04,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900873351] [2024-11-28 05:29:04,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:04,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:04,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:04,687 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:04,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:29:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:04,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:29:04,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:04,915 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:04,915 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:04,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900873351] [2024-11-28 05:29:04,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900873351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:04,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:04,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:29:04,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368564901] [2024-11-28 05:29:04,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:04,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:29:04,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:04,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:29:04,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:29:04,918 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:05,373 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2024-11-28 05:29:05,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:29:05,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-28 05:29:05,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:05,376 INFO L225 Difference]: With dead ends: 66 [2024-11-28 05:29:05,378 INFO L226 Difference]: Without dead ends: 66 [2024-11-28 05:29:05,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:29:05,380 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 18 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:05,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 163 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:29:05,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-28 05:29:05,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2024-11-28 05:29:05,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 40 states have (on average 1.5) internal successors, (60), 57 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:05,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2024-11-28 05:29:05,396 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 12 [2024-11-28 05:29:05,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:05,397 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2024-11-28 05:29:05,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:05,397 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2024-11-28 05:29:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:29:05,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:05,398 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:05,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:29:05,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:05,603 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:05,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:05,603 INFO L85 PathProgramCache]: Analyzing trace with hash -967584990, now seen corresponding path program 1 times [2024-11-28 05:29:05,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:05,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447634656] [2024-11-28 05:29:05,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:05,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:05,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:05,606 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:05,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:29:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:05,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 05:29:05,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:05,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:29:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:05,889 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:05,890 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:05,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447634656] [2024-11-28 05:29:05,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447634656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:05,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:05,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:29:05,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817963301] [2024-11-28 05:29:05,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:05,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:29:05,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:05,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:29:05,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:29:05,891 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:06,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:06,326 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2024-11-28 05:29:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:29:06,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-28 05:29:06,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:06,328 INFO L225 Difference]: With dead ends: 65 [2024-11-28 05:29:06,328 INFO L226 Difference]: Without dead ends: 65 [2024-11-28 05:29:06,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:29:06,331 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 6 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:06,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 197 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:29:06,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-28 05:29:06,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2024-11-28 05:29:06,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.475) internal successors, (59), 56 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-28 05:29:06,341 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 12 [2024-11-28 05:29:06,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:06,341 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-28 05:29:06,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:06,342 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-28 05:29:06,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 05:29:06,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:06,342 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:06,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:29:06,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:06,543 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:06,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:06,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1869016769, now seen corresponding path program 1 times [2024-11-28 05:29:06,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:06,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418830190] [2024-11-28 05:29:06,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:06,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:06,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:06,549 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:06,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:29:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:06,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:29:06,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:06,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:06,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:06,808 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:06,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418830190] [2024-11-28 05:29:06,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418830190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:06,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:06,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:29:06,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610598433] [2024-11-28 05:29:06,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:06,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:29:06,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:06,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:29:06,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:29:06,809 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:07,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:07,372 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2024-11-28 05:29:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:29:07,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-28 05:29:07,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:07,374 INFO L225 Difference]: With dead ends: 69 [2024-11-28 05:29:07,374 INFO L226 Difference]: Without dead ends: 69 [2024-11-28 05:29:07,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:29:07,375 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 1 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:07,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 227 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:29:07,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-28 05:29:07,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-11-28 05:29:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 64 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:07,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2024-11-28 05:29:07,390 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 21 [2024-11-28 05:29:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:07,390 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2024-11-28 05:29:07,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:07,391 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2024-11-28 05:29:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 05:29:07,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:07,391 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:07,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 05:29:07,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:07,592 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:07,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:07,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1869016770, now seen corresponding path program 1 times [2024-11-28 05:29:07,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:07,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833456538] [2024-11-28 05:29:07,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:07,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:07,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:07,598 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:07,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:29:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:07,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 05:29:07,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:07,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:29:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:08,086 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:08,087 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:08,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833456538] [2024-11-28 05:29:08,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833456538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:08,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:08,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:29:08,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838682771] [2024-11-28 05:29:08,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:08,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:29:08,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:08,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:29:08,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:29:08,088 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:08,686 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2024-11-28 05:29:08,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:29:08,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-28 05:29:08,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:08,688 INFO L225 Difference]: With dead ends: 69 [2024-11-28 05:29:08,688 INFO L226 Difference]: Without dead ends: 69 [2024-11-28 05:29:08,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:29:08,689 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 1 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:08,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 242 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:29:08,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-28 05:29:08,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-11-28 05:29:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.4375) internal successors, (69), 64 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2024-11-28 05:29:08,697 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 21 [2024-11-28 05:29:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:08,697 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2024-11-28 05:29:08,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:08,698 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2024-11-28 05:29:08,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 05:29:08,698 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:08,699 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:08,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 05:29:08,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:08,899 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:08,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:08,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1869086412, now seen corresponding path program 1 times [2024-11-28 05:29:08,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:08,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457161179] [2024-11-28 05:29:08,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:08,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:08,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:08,903 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:08,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:29:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:09,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:29:09,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:09,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:09,122 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:09,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457161179] [2024-11-28 05:29:09,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457161179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:09,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:09,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:29:09,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367131097] [2024-11-28 05:29:09,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:09,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:29:09,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:09,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:29:09,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:29:09,124 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:09,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:09,320 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2024-11-28 05:29:09,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:29:09,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-28 05:29:09,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:09,321 INFO L225 Difference]: With dead ends: 72 [2024-11-28 05:29:09,321 INFO L226 Difference]: Without dead ends: 72 [2024-11-28 05:29:09,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:29:09,322 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 24 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:09,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 341 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:29:09,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-28 05:29:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2024-11-28 05:29:09,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 65 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:09,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-28 05:29:09,329 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 21 [2024-11-28 05:29:09,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:09,329 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-28 05:29:09,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:09,330 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-28 05:29:09,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 05:29:09,330 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:09,330 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:09,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:29:09,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:09,531 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:09,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:09,532 INFO L85 PathProgramCache]: Analyzing trace with hash -181832146, now seen corresponding path program 1 times [2024-11-28 05:29:09,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:09,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881178879] [2024-11-28 05:29:09,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:09,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:09,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:09,535 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:09,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:29:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:09,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:29:09,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:09,951 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:29:09,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:29:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:09,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:29:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:14,398 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:14,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881178879] [2024-11-28 05:29:14,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881178879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:29:14,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:29:14,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2024-11-28 05:29:14,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258033104] [2024-11-28 05:29:14,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:29:14,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:29:14,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:14,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:29:14,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:29:14,399 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:29:15,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:15,281 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-11-28 05:29:15,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:29:15,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-11-28 05:29:15,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:15,283 INFO L225 Difference]: With dead ends: 71 [2024-11-28 05:29:15,283 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 05:29:15,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:29:15,284 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 15 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:15,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 215 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:29:15,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 05:29:15,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-28 05:29:15,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.42) internal successors, (71), 66 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:15,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2024-11-28 05:29:15,293 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 24 [2024-11-28 05:29:15,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:15,294 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2024-11-28 05:29:15,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:29:15,294 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2024-11-28 05:29:15,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 05:29:15,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:15,295 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:15,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 05:29:15,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:15,496 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:15,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:15,497 INFO L85 PathProgramCache]: Analyzing trace with hash -181832145, now seen corresponding path program 1 times [2024-11-28 05:29:15,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:15,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839626327] [2024-11-28 05:29:15,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:15,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:15,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:15,499 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:15,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:29:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:15,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 05:29:15,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:15,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:29:16,045 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (and (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_~pi~0.base)))) is different from true [2024-11-28 05:29:16,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:29:16,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:29:16,168 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:29:16,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:29:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-28 05:29:16,212 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:29:16,730 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:16,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839626327] [2024-11-28 05:29:16,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839626327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:29:16,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [512913933] [2024-11-28 05:29:16,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:16,731 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:29:16,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:29:16,734 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:29:16,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-28 05:29:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:17,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 05:29:17,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:17,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:29:17,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:29:17,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:29:17,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:29:17,421 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:29:17,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:29:17,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-28 05:29:17,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:29:21,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [512913933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:29:21,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:29:21,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 9 [2024-11-28 05:29:21,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664703173] [2024-11-28 05:29:21,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:29:21,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:29:21,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:21,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:29:21,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2024-11-28 05:29:21,857 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:23,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:23,028 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2024-11-28 05:29:23,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:29:23,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-28 05:29:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:23,032 INFO L225 Difference]: With dead ends: 84 [2024-11-28 05:29:23,033 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 05:29:23,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2024-11-28 05:29:23,034 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:23,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 241 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 244 Invalid, 0 Unknown, 78 Unchecked, 1.0s Time] [2024-11-28 05:29:23,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 05:29:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2024-11-28 05:29:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 75 states have internal predecessors, (83), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:23,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2024-11-28 05:29:23,042 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 24 [2024-11-28 05:29:23,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:23,042 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2024-11-28 05:29:23,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:23,043 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2024-11-28 05:29:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 05:29:23,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:23,043 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:23,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-28 05:29:23,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:29:23,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:23,444 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:23,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1007696230, now seen corresponding path program 1 times [2024-11-28 05:29:23,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:23,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370140952] [2024-11-28 05:29:23,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:23,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:23,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:23,447 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:23,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:29:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:23,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:29:23,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:23,655 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 15 treesize of output 1 [2024-11-28 05:29:23,683 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 19 treesize of output 11 [2024-11-28 05:29:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:29:23,707 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:23,707 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:23,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370140952] [2024-11-28 05:29:23,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370140952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:23,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:23,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:29:23,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699262132] [2024-11-28 05:29:23,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:23,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:29:23,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:23,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:29:23,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:29:23,709 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:29:24,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:24,254 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2024-11-28 05:29:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:29:24,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-28 05:29:24,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:24,256 INFO L225 Difference]: With dead ends: 79 [2024-11-28 05:29:24,256 INFO L226 Difference]: Without dead ends: 79 [2024-11-28 05:29:24,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:29:24,257 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 9 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:24,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 203 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:29:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-28 05:29:24,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-28 05:29:24,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 74 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2024-11-28 05:29:24,264 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 27 [2024-11-28 05:29:24,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:24,264 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2024-11-28 05:29:24,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:29:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2024-11-28 05:29:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 05:29:24,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:24,265 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:24,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:29:24,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:24,466 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:24,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:24,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1007696229, now seen corresponding path program 1 times [2024-11-28 05:29:24,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:24,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461915510] [2024-11-28 05:29:24,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:24,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:24,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:24,469 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:24,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:29:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:24,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:29:24,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:24,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:29:24,738 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 15 treesize of output 1 [2024-11-28 05:29:24,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:29:24,800 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 17 treesize of output 9 [2024-11-28 05:29:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:29:24,845 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:24,845 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:24,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461915510] [2024-11-28 05:29:24,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461915510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:24,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:24,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:29:24,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615149509] [2024-11-28 05:29:24,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:24,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:29:24,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:24,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:29:24,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:29:24,847 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:29:25,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:25,380 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2024-11-28 05:29:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:29:25,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-28 05:29:25,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:25,382 INFO L225 Difference]: With dead ends: 78 [2024-11-28 05:29:25,382 INFO L226 Difference]: Without dead ends: 78 [2024-11-28 05:29:25,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:29:25,383 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 3 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:25,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 228 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:29:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-28 05:29:25,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-28 05:29:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 73 states have internal predecessors, (79), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2024-11-28 05:29:25,388 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 27 [2024-11-28 05:29:25,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:25,388 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2024-11-28 05:29:25,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:29:25,389 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2024-11-28 05:29:25,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 05:29:25,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:25,389 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] [2024-11-28 05:29:25,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 05:29:25,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:25,590 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:25,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:25,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1381084206, now seen corresponding path program 1 times [2024-11-28 05:29:25,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:25,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246858787] [2024-11-28 05:29:25,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:25,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:25,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:25,593 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:25,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:29:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:25,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 05:29:25,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:25,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:29:25,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:29:25,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:29:25,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:29:25,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:29:25,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2024-11-28 05:29:25,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2024-11-28 05:29:26,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:29:26,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2024-11-28 05:29:26,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2024-11-28 05:29:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:26,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:29:27,323 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv16 64)))) (and (forall ((v_ArrVal_423 (_ BitVec 64))) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 v_ArrVal_423)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (forall ((v_ArrVal_425 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_425 .cse0)) v_ArrVal_425)) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_425) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))))) is different from false [2024-11-28 05:29:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:29,719 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:29,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246858787] [2024-11-28 05:29:29,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246858787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:29:29,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:29:29,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2024-11-28 05:29:29,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124192741] [2024-11-28 05:29:29,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:29:29,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:29:29,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:29,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:29:29,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=234, Unknown=1, NotChecked=30, Total=306 [2024-11-28 05:29:29,720 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:29:30,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:30,743 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2024-11-28 05:29:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:29:30,743 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-28 05:29:30,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:30,744 INFO L225 Difference]: With dead ends: 80 [2024-11-28 05:29:30,744 INFO L226 Difference]: Without dead ends: 80 [2024-11-28 05:29:30,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=234, Unknown=1, NotChecked=30, Total=306 [2024-11-28 05:29:30,745 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 5 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:30,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 481 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 39 Unchecked, 1.0s Time] [2024-11-28 05:29:30,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-28 05:29:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-28 05:29:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 61 states have (on average 1.3278688524590163) internal successors, (81), 75 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2024-11-28 05:29:30,750 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 26 [2024-11-28 05:29:30,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:30,750 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2024-11-28 05:29:30,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:29:30,751 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2024-11-28 05:29:30,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 05:29:30,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:30,752 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:30,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 05:29:30,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:30,957 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:30,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1381014563, now seen corresponding path program 1 times [2024-11-28 05:29:30,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:30,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384913173] [2024-11-28 05:29:30,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:30,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:30,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:30,962 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:30,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:29:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:31,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:29:31,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:29:31,324 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:31,324 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:31,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384913173] [2024-11-28 05:29:31,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384913173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:31,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:31,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:29:31,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740644087] [2024-11-28 05:29:31,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:31,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:29:31,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:31,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:29:31,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:29:31,327 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:31,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:31,994 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2024-11-28 05:29:31,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:29:31,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-28 05:29:31,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:31,995 INFO L225 Difference]: With dead ends: 82 [2024-11-28 05:29:31,995 INFO L226 Difference]: Without dead ends: 82 [2024-11-28 05:29:31,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:29:31,996 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:31,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 219 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:29:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-28 05:29:32,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-28 05:29:32,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.328125) internal successors, (85), 77 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:32,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2024-11-28 05:29:32,002 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 26 [2024-11-28 05:29:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:32,002 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2024-11-28 05:29:32,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:32,002 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2024-11-28 05:29:32,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 05:29:32,003 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:32,003 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:32,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 05:29:32,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:32,207 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:32,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:32,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1381014562, now seen corresponding path program 1 times [2024-11-28 05:29:32,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:32,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561715794] [2024-11-28 05:29:32,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:32,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:32,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:32,212 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:32,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 05:29:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:32,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 05:29:32,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:32,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:29:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:29:32,707 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:32,707 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:32,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561715794] [2024-11-28 05:29:32,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561715794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:32,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:32,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:29:32,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331594935] [2024-11-28 05:29:32,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:32,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:29:32,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:32,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:29:32,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:29:32,708 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:33,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:33,495 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2024-11-28 05:29:33,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:29:33,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-28 05:29:33,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:33,496 INFO L225 Difference]: With dead ends: 84 [2024-11-28 05:29:33,496 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 05:29:33,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:29:33,497 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 3 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:33,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 237 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:29:33,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 05:29:33,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-28 05:29:33,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.303030303030303) internal successors, (86), 79 states have internal predecessors, (86), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:33,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2024-11-28 05:29:33,501 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 26 [2024-11-28 05:29:33,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:33,502 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2024-11-28 05:29:33,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:33,502 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2024-11-28 05:29:33,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 05:29:33,503 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:33,503 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:33,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 05:29:33,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:33,707 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:33,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:33,708 INFO L85 PathProgramCache]: Analyzing trace with hash 138223906, now seen corresponding path program 1 times [2024-11-28 05:29:33,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:33,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019055295] [2024-11-28 05:29:33,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:33,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:33,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:33,710 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:33,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 05:29:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:33,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:29:33,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:29:33,949 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:33,949 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:33,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019055295] [2024-11-28 05:29:33,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019055295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:33,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:33,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:29:33,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041245026] [2024-11-28 05:29:33,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:33,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:29:33,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:33,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:29:33,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:29:33,951 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:34,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:34,245 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2024-11-28 05:29:34,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:29:34,246 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-28 05:29:34,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:34,246 INFO L225 Difference]: With dead ends: 91 [2024-11-28 05:29:34,247 INFO L226 Difference]: Without dead ends: 91 [2024-11-28 05:29:34,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:29:34,247 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 27 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:34,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 340 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:29:34,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-28 05:29:34,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2024-11-28 05:29:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 80 states have internal predecessors, (86), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2024-11-28 05:29:34,252 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 27 [2024-11-28 05:29:34,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:34,252 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2024-11-28 05:29:34,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2024-11-28 05:29:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 05:29:34,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:34,254 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:34,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 05:29:34,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:34,454 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:34,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:34,455 INFO L85 PathProgramCache]: Analyzing trace with hash -313055326, now seen corresponding path program 1 times [2024-11-28 05:29:34,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:34,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340160444] [2024-11-28 05:29:34,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:34,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:34,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:34,457 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:34,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 05:29:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:34,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:29:34,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:29:34,924 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:34,924 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:34,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340160444] [2024-11-28 05:29:34,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340160444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:34,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:34,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:29:34,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884994440] [2024-11-28 05:29:34,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:34,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:29:34,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:34,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:29:34,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:29:34,925 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:35,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:35,433 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2024-11-28 05:29:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:29:35,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-28 05:29:35,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:35,435 INFO L225 Difference]: With dead ends: 90 [2024-11-28 05:29:35,435 INFO L226 Difference]: Without dead ends: 90 [2024-11-28 05:29:35,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:29:35,436 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 23 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:35,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 308 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:29:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-28 05:29:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2024-11-28 05:29:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 84 states have internal predecessors, (93), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2024-11-28 05:29:35,440 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 29 [2024-11-28 05:29:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:35,441 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2024-11-28 05:29:35,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:35,441 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2024-11-28 05:29:35,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 05:29:35,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:35,442 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:35,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 05:29:35,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:35,643 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:35,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:35,643 INFO L85 PathProgramCache]: Analyzing trace with hash 589074652, now seen corresponding path program 1 times [2024-11-28 05:29:35,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:35,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989694490] [2024-11-28 05:29:35,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:35,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:35,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:35,646 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:35,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 05:29:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:35,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 05:29:35,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:35,977 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:29:35,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:29:36,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:29:36,134 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:29:36,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-28 05:29:36,169 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 27 treesize of output 15 [2024-11-28 05:29:36,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:36,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:36,211 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:36,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989694490] [2024-11-28 05:29:36,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989694490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:36,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:36,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 05:29:36,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478264026] [2024-11-28 05:29:36,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:36,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:29:36,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:36,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:29:36,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:29:36,216 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:37,068 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2024-11-28 05:29:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:29:37,068 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-28 05:29:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:37,069 INFO L225 Difference]: With dead ends: 90 [2024-11-28 05:29:37,069 INFO L226 Difference]: Without dead ends: 90 [2024-11-28 05:29:37,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:29:37,070 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 23 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:37,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 274 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:29:37,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-28 05:29:37,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2024-11-28 05:29:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.295774647887324) internal successors, (92), 84 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2024-11-28 05:29:37,074 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 31 [2024-11-28 05:29:37,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:37,075 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2024-11-28 05:29:37,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:37,075 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2024-11-28 05:29:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 05:29:37,076 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:37,076 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:37,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 05:29:37,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:37,277 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:37,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:37,277 INFO L85 PathProgramCache]: Analyzing trace with hash 589074653, now seen corresponding path program 1 times [2024-11-28 05:29:37,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:37,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976413130] [2024-11-28 05:29:37,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:37,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:37,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:37,279 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:37,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 05:29:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:37,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 05:29:37,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:37,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:29:37,588 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:29:37,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:29:37,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:29:37,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:29:37,866 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:29:37,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 05:29:37,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:29:37,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:29:37,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:29:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:37,986 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:29:37,986 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:37,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976413130] [2024-11-28 05:29:37,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976413130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:29:37,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:29:37,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:29:37,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727670065] [2024-11-28 05:29:37,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:29:37,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:29:37,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:37,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:29:37,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:29:37,987 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:38,915 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2024-11-28 05:29:38,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:29:38,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-28 05:29:38,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:38,918 INFO L225 Difference]: With dead ends: 89 [2024-11-28 05:29:38,918 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 05:29:38,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:29:38,919 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 21 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:38,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 262 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:29:38,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 05:29:38,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-28 05:29:38,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 84 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:38,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2024-11-28 05:29:38,926 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 31 [2024-11-28 05:29:38,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:38,927 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2024-11-28 05:29:38,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:38,927 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2024-11-28 05:29:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 05:29:38,928 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:38,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:38,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 05:29:39,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:39,129 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:39,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:39,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1857089563, now seen corresponding path program 1 times [2024-11-28 05:29:39,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:39,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103027066] [2024-11-28 05:29:39,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:39,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:39,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:39,131 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:39,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 05:29:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:39,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 05:29:39,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:39,265 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 8 treesize of output 1 [2024-11-28 05:29:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:39,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:29:39,889 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 05:29:39,889 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 24 treesize of output 23 [2024-11-28 05:29:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:29:40,007 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:40,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103027066] [2024-11-28 05:29:40,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103027066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:29:40,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:29:40,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 14 [2024-11-28 05:29:40,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247519155] [2024-11-28 05:29:40,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:29:40,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:29:40,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:40,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:29:40,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:29:40,008 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:41,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:41,173 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2024-11-28 05:29:41,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:29:41,174 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2024-11-28 05:29:41,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:41,174 INFO L225 Difference]: With dead ends: 106 [2024-11-28 05:29:41,174 INFO L226 Difference]: Without dead ends: 106 [2024-11-28 05:29:41,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:29:41,175 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 27 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:41,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 345 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 05:29:41,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-28 05:29:41,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2024-11-28 05:29:41,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 97 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2024-11-28 05:29:41,183 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 32 [2024-11-28 05:29:41,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:41,183 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2024-11-28 05:29:41,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:29:41,183 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2024-11-28 05:29:41,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 05:29:41,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:41,184 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:41,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 05:29:41,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:41,385 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:41,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1735199206, now seen corresponding path program 1 times [2024-11-28 05:29:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:41,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89985691] [2024-11-28 05:29:41,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:41,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:41,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:41,387 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:41,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 05:29:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:41,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:29:41,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:41,932 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_destroy_~l#1.base_17| (_ BitVec 64))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_17| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_17|)))) is different from true [2024-11-28 05:29:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-11-28 05:29:41,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:29:42,363 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:42,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89985691] [2024-11-28 05:29:42,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89985691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:29:42,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [813925888] [2024-11-28 05:29:42,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:42,364 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:29:42,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:29:42,368 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:29:42,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-28 05:29:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:42,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:29:42,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:29:43,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:29:44,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [813925888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:29:44,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:29:44,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2024-11-28 05:29:44,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517837781] [2024-11-28 05:29:44,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:29:44,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 05:29:44,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:44,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 05:29:44,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=298, Unknown=2, NotChecked=34, Total=380 [2024-11-28 05:29:44,266 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 19 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:45,755 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2024-11-28 05:29:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:29:45,755 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2024-11-28 05:29:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:45,756 INFO L225 Difference]: With dead ends: 107 [2024-11-28 05:29:45,756 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 05:29:45,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=621, Unknown=2, NotChecked=50, Total=756 [2024-11-28 05:29:45,757 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 72 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:45,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 385 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 441 Invalid, 0 Unknown, 79 Unchecked, 1.2s Time] [2024-11-28 05:29:45,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 05:29:45,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-28 05:29:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.352112676056338) internal successors, (96), 84 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2024-11-28 05:29:45,761 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 33 [2024-11-28 05:29:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:45,761 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2024-11-28 05:29:45,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2024-11-28 05:29:45,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 05:29:45,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:45,763 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:45,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2024-11-28 05:29:45,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 05:29:46,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:46,163 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:46,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:46,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1129031897, now seen corresponding path program 1 times [2024-11-28 05:29:46,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:46,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53565853] [2024-11-28 05:29:46,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:46,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:46,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:46,166 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:46,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 05:29:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:46,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:29:46,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 05:29:46,415 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:29:46,476 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-28 05:29:46,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 05:29:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 05:29:46,503 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53565853] [2024-11-28 05:29:46,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53565853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:29:46,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:29:46,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2024-11-28 05:29:46,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482991578] [2024-11-28 05:29:46,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:29:46,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:29:46,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:46,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:29:46,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:29:46,504 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:46,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:46,936 INFO L93 Difference]: Finished difference Result 99 states and 115 transitions. [2024-11-28 05:29:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:29:46,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-28 05:29:46,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:46,938 INFO L225 Difference]: With dead ends: 99 [2024-11-28 05:29:46,938 INFO L226 Difference]: Without dead ends: 99 [2024-11-28 05:29:46,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:29:46,939 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 12 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:46,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 183 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:29:46,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-28 05:29:46,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2024-11-28 05:29:46,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.3375) internal successors, (107), 93 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:46,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2024-11-28 05:29:46,942 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 42 [2024-11-28 05:29:46,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:46,942 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2024-11-28 05:29:46,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:29:46,942 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2024-11-28 05:29:46,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 05:29:46,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:46,943 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:46,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 05:29:47,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:47,143 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:47,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:47,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1129031896, now seen corresponding path program 1 times [2024-11-28 05:29:47,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:47,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827773585] [2024-11-28 05:29:47,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:47,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:47,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:47,146 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:47,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 05:29:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:47,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 05:29:47,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:29:47,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:29:48,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:29:48,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2024-11-28 05:29:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:29:48,893 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:48,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827773585] [2024-11-28 05:29:48,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827773585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:29:48,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:29:48,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-28 05:29:48,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056091486] [2024-11-28 05:29:48,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:29:48,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 05:29:48,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:29:48,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 05:29:48,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:29:48,894 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:29:50,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:29:50,521 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2024-11-28 05:29:50,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:29:50,522 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2024-11-28 05:29:50,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:29:50,523 INFO L225 Difference]: With dead ends: 99 [2024-11-28 05:29:50,523 INFO L226 Difference]: Without dead ends: 99 [2024-11-28 05:29:50,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:29:50,524 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 24 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:29:50,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 420 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 05:29:50,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-28 05:29:50,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2024-11-28 05:29:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.325) internal successors, (106), 93 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:29:50,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2024-11-28 05:29:50,529 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 42 [2024-11-28 05:29:50,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:29:50,529 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2024-11-28 05:29:50,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:29:50,530 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2024-11-28 05:29:50,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 05:29:50,530 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:29:50,530 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:29:50,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 05:29:50,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:50,731 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:29:50,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:29:50,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1204720632, now seen corresponding path program 1 times [2024-11-28 05:29:50,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:29:50,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733573045] [2024-11-28 05:29:50,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:50,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:29:50,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:29:50,733 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:29:50,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 05:29:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:50,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 05:29:50,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:51,176 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:29:51,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:29:51,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:29:51,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:29:51,339 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 16 treesize of output 8 [2024-11-28 05:29:51,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:29:51,504 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 7 treesize of output 3 [2024-11-28 05:29:51,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 29 [2024-11-28 05:29:51,667 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 19 treesize of output 11 [2024-11-28 05:29:51,834 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (_ bv1 1)))) is different from true [2024-11-28 05:29:51,899 INFO L349 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2024-11-28 05:29:51,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2024-11-28 05:29:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 10 not checked. [2024-11-28 05:29:51,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:29:52,575 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:29:52,576 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 73 [2024-11-28 05:29:52,583 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 54 treesize of output 48 [2024-11-28 05:29:52,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:29:52,955 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2024-11-28 05:29:52,958 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 37 treesize of output 29 [2024-11-28 05:29:52,974 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 8 treesize of output 6 [2024-11-28 05:29:53,000 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-28 05:29:53,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 05:29:53,271 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:29:53,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733573045] [2024-11-28 05:29:53,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733573045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:29:53,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2088885872] [2024-11-28 05:29:53,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:29:53,272 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:29:53,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:29:53,277 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:29:53,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-28 05:29:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:29:53,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 05:29:53,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:53,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:29:54,371 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:29:54,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 05:29:54,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:29:54,772 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:29:54,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-28 05:29:54,986 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:29:54,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-28 05:29:55,022 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 27 treesize of output 15 [2024-11-28 05:29:55,567 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-28 05:29:55,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-11-28 05:29:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:29:55,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:29:59,880 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1067 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1067) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-28 05:29:59,897 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1067 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1067) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-28 05:29:59,924 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1066 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1067 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1066))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1067)) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-28 05:29:59,938 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1066 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1067 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1066))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1067)) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))))) is different from false [2024-11-28 05:29:59,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:29:59,957 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 33 [2024-11-28 05:29:59,960 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 152 treesize of output 128 [2024-11-28 05:29:59,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2024-11-28 05:29:59,993 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 13 treesize of output 11 [2024-11-28 05:30:08,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2088885872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:30:08,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:30:08,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2024-11-28 05:30:08,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6199398] [2024-11-28 05:30:08,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:30:08,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 05:30:08,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:30:08,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 05:30:08,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1706, Unknown=10, NotChecked=440, Total=2352 [2024-11-28 05:30:08,363 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand has 33 states, 32 states have (on average 2.375) internal successors, (76), 28 states have internal predecessors, (76), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 05:30:10,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:30:10,512 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2024-11-28 05:30:10,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:30:10,513 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.375) internal successors, (76), 28 states have internal predecessors, (76), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 45 [2024-11-28 05:30:10,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:30:10,514 INFO L225 Difference]: With dead ends: 96 [2024-11-28 05:30:10,514 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 05:30:10,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 5 IntricatePredicates, 2 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=288, Invalid=2272, Unknown=10, NotChecked=510, Total=3080 [2024-11-28 05:30:10,515 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 17 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:30:10,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 581 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 500 Invalid, 0 Unknown, 67 Unchecked, 1.6s Time] [2024-11-28 05:30:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 05:30:10,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-28 05:30:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 80 states have (on average 1.3) internal successors, (104), 91 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:30:10,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2024-11-28 05:30:10,519 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 45 [2024-11-28 05:30:10,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:30:10,520 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2024-11-28 05:30:10,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.375) internal successors, (76), 28 states have internal predecessors, (76), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 05:30:10,520 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2024-11-28 05:30:10,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 05:30:10,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:30:10,521 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:30:10,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2024-11-28 05:30:10,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 05:30:10,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:30:10,922 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:30:10,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:30:10,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1204720631, now seen corresponding path program 1 times [2024-11-28 05:30:10,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:30:10,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236780059] [2024-11-28 05:30:10,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:30:10,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:30:10,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:30:10,925 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:30:10,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 05:30:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:30:11,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 05:30:11,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:30:11,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:30:11,372 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:30:11,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:30:11,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:30:11,437 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 11 treesize of output 7 [2024-11-28 05:30:11,628 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:30:11,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 05:30:11,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:30:11,802 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:30:11,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 54 [2024-11-28 05:30:11,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:30:11,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2024-11-28 05:30:11,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:30:12,225 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (and (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_~pi~0.base)))) is different from true [2024-11-28 05:30:12,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:30:12,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:30:12,307 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:30:12,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:30:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-28 05:30:12,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:30:12,880 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:30:12,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236780059] [2024-11-28 05:30:12,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236780059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:30:12,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2128877574] [2024-11-28 05:30:12,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:30:12,881 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:30:12,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:30:12,885 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:30:12,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-28 05:30:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:30:13,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 05:30:13,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:30:13,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:30:13,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:30:14,075 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:30:14,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 05:30:14,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:30:14,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:30:14,593 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:30:14,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 54 [2024-11-28 05:30:14,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:30:14,906 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:30:14,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 54 [2024-11-28 05:30:14,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:30:15,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2024-11-28 05:30:15,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:30:15,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:30:15,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:30:15,526 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-11-28 05:30:15,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-28 05:30:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2024-11-28 05:30:15,530 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:30:15,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2128877574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:30:15,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:30:15,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 26 [2024-11-28 05:30:15,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982784314] [2024-11-28 05:30:15,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:30:15,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 05:30:15,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:30:15,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 05:30:15,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=669, Unknown=1, NotChecked=52, Total=812 [2024-11-28 05:30:15,971 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand has 27 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 21 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 05:30:18,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:30:18,183 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2024-11-28 05:30:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:30:18,184 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 21 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 45 [2024-11-28 05:30:18,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:30:18,184 INFO L225 Difference]: With dead ends: 92 [2024-11-28 05:30:18,184 INFO L226 Difference]: Without dead ends: 92 [2024-11-28 05:30:18,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=149, Invalid=976, Unknown=1, NotChecked=64, Total=1190 [2024-11-28 05:30:18,185 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 13 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:30:18,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 513 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 471 Invalid, 0 Unknown, 62 Unchecked, 1.6s Time] [2024-11-28 05:30:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-28 05:30:18,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-28 05:30:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 80 states have (on average 1.25) internal successors, (100), 87 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:30:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2024-11-28 05:30:18,190 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 45 [2024-11-28 05:30:18,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:30:18,190 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2024-11-28 05:30:18,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 21 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 05:30:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2024-11-28 05:30:18,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 05:30:18,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:30:18,192 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:30:18,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 05:30:18,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2024-11-28 05:30:18,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:30:18,592 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:30:18,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:30:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash -829408468, now seen corresponding path program 1 times [2024-11-28 05:30:18,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:30:18,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84012363] [2024-11-28 05:30:18,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:30:18,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:30:18,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:30:18,595 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:30:18,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 05:30:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:30:18,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 05:30:18,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:30:19,002 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:30:19,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:30:19,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:30:19,236 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:30:19,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-11-28 05:30:19,338 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:30:19,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-28 05:30:19,578 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 27 treesize of output 15 [2024-11-28 05:30:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:30:19,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:30:19,922 INFO L349 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2024-11-28 05:30:19,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2024-11-28 05:30:19,931 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1334 (Array (_ BitVec 64) (_ BitVec 64)))) (= |c_ULTIMATE.start_create_#t~mem9#1.base| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1334) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) is different from false [2024-11-28 05:30:19,951 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1334 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (= (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1334) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) .cse0))) is different from false [2024-11-28 05:30:19,980 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1334 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1333 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1333))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (= (select (select (store .cse0 .cse1 v_ArrVal_1334) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) .cse1)))) is different from false [2024-11-28 05:30:19,999 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1334 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1333 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1333))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (= (select (select (store .cse0 .cse1 v_ArrVal_1334) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) .cse1)))) is different from false [2024-11-28 05:30:20,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:20,022 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 36 [2024-11-28 05:30:20,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:20,056 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 408 treesize of output 343 [2024-11-28 05:30:20,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:20,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 287 treesize of output 263 [2024-11-28 05:30:20,119 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 255 treesize of output 239 [2024-11-28 05:30:20,655 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:30:20,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84012363] [2024-11-28 05:30:20,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84012363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:30:20,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [602163987] [2024-11-28 05:30:20,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:30:20,655 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:30:20,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:30:20,660 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:30:20,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-28 05:30:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:30:21,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 05:30:21,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:30:21,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:30:21,876 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:30:21,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 05:30:22,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:30:22,400 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:30:22,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-28 05:30:22,642 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:30:22,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-28 05:30:23,152 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 27 treesize of output 15 [2024-11-28 05:30:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:30:23,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:30:23,522 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1404 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1404) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) is different from false [2024-11-28 05:30:23,720 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1404 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1403 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1403))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1404)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) is different from false [2024-11-28 05:30:23,740 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1404 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1403 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1403))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1404)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) is different from false [2024-11-28 05:30:23,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:23,769 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 33 [2024-11-28 05:30:23,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:23,805 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 152 treesize of output 139 [2024-11-28 05:30:23,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:23,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 86 [2024-11-28 05:30:23,851 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 78 treesize of output 74 [2024-11-28 05:30:39,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [602163987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:30:39,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:30:39,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 30 [2024-11-28 05:30:39,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513178069] [2024-11-28 05:30:39,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:30:39,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 05:30:39,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:30:39,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 05:30:39,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1268, Unknown=19, NotChecked=546, Total=1980 [2024-11-28 05:30:39,223 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 31 states, 30 states have (on average 2.8) internal successors, (84), 27 states have internal predecessors, (84), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:30:41,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:30:41,649 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2024-11-28 05:30:41,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:30:41,650 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.8) internal successors, (84), 27 states have internal predecessors, (84), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2024-11-28 05:30:41,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:30:41,650 INFO L225 Difference]: With dead ends: 98 [2024-11-28 05:30:41,650 INFO L226 Difference]: Without dead ends: 98 [2024-11-28 05:30:41,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=172, Invalid=1477, Unknown=19, NotChecked=588, Total=2256 [2024-11-28 05:30:41,651 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:30:41,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 639 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 05:30:41,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-28 05:30:41,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2024-11-28 05:30:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 85 states have (on average 1.2588235294117647) internal successors, (107), 92 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:30:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2024-11-28 05:30:41,655 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 47 [2024-11-28 05:30:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:30:41,655 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2024-11-28 05:30:41,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.8) internal successors, (84), 27 states have internal predecessors, (84), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:30:41,656 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2024-11-28 05:30:41,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 05:30:41,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:30:41,657 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:30:41,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 05:30:41,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2024-11-28 05:30:42,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:30:42,058 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:30:42,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:30:42,058 INFO L85 PathProgramCache]: Analyzing trace with hash -829408467, now seen corresponding path program 1 times [2024-11-28 05:30:42,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:30:42,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914747308] [2024-11-28 05:30:42,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:30:42,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:30:42,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:30:42,060 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:30:42,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 05:30:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:30:42,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 05:30:42,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:30:42,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:30:42,514 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:30:42,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:30:42,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:30:42,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:30:42,860 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:30:42,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 05:30:42,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:30:43,043 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:30:43,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 05:30:43,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:30:43,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:30:43,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:30:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:30:43,537 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:30:44,801 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1476 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1476) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (forall ((v_ArrVal_1477 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1476 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1476) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1477) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) is different from false [2024-11-28 05:30:44,875 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_1477 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1476 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1476) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) (_ bv8 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1477) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))) (forall ((v_ArrVal_1476 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1476) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse1 (bvadd .cse1 (_ bv8 64))))))) is different from false [2024-11-28 05:30:45,015 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1477 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1476 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1475 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1474 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1474))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1475) .cse0 v_ArrVal_1476) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) (_ bv8 64)) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_1477) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))))) (forall ((v_ArrVal_1476 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1475 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1474 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1475) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1474) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1476) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse2 (bvadd .cse2 (_ bv8 64)))))) is different from false [2024-11-28 05:30:45,165 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_1477 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1476 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1475 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1474 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1474))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1475) .cse1 v_ArrVal_1476) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|) (_ bv8 64)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1477) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))))) (forall ((v_ArrVal_1476 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1475 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1474 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1475) (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1474) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1476) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse3 (bvadd .cse3 (_ bv8 64))))))) is different from false [2024-11-28 05:30:45,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:45,233 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2024-11-28 05:30:45,252 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:45,253 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2024-11-28 05:30:45,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:45,307 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 632 treesize of output 567 [2024-11-28 05:30:45,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:45,377 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 1831 treesize of output 1742 [2024-11-28 05:30:45,414 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 547 treesize of output 523 [2024-11-28 05:30:45,426 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 523 treesize of output 499 [2024-11-28 05:30:45,440 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 499 treesize of output 491 [2024-11-28 05:30:45,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:45,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 491 treesize of output 447 [2024-11-28 05:30:52,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:52,184 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 64 [2024-11-28 05:30:52,204 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:52,205 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 48 [2024-11-28 05:30:52,219 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 80 treesize of output 68 [2024-11-28 05:30:52,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:52,308 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 212 treesize of output 195 [2024-11-28 05:30:52,345 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 70 treesize of output 66 [2024-11-28 05:30:52,375 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 66 treesize of output 62 [2024-11-28 05:30:52,386 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 92 treesize of output 80 [2024-11-28 05:30:53,261 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:30:53,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914747308] [2024-11-28 05:30:53,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914747308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:30:53,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [563889451] [2024-11-28 05:30:53,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:30:53,261 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:30:53,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:30:53,263 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:30:53,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-28 05:30:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:30:53,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 05:30:53,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:30:53,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:30:54,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:30:54,544 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:30:54,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:30:54,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:30:54,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:30:55,193 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:30:55,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 05:30:55,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:30:55,482 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:30:55,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 05:30:55,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:30:56,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:30:56,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:30:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:30:56,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:30:56,589 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1551) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (forall ((v_ArrVal_1550 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1551) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1550) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) is different from false [2024-11-28 05:30:56,678 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_1551) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (forall ((v_ArrVal_1550 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_1551) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_1550) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))))) is different from false [2024-11-28 05:30:57,007 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1549 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1548 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1549) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1548) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1551) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (forall ((v_ArrVal_1549 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1548 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1550 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1548))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd (_ bv8 64) (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1549) .cse1 v_ArrVal_1551) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1550) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))))) is different from false [2024-11-28 05:30:57,931 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_1549 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1548 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1550 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1548))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd (_ bv8 64) (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1549) .cse1 v_ArrVal_1551) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1550) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))))) (forall ((v_ArrVal_1549 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1548 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1549) (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1548) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1551) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (bvule .cse3 (bvadd (_ bv8 64) .cse3)))))) is different from false [2024-11-28 05:30:58,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:58,002 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2024-11-28 05:30:58,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:58,021 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2024-11-28 05:30:58,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:58,072 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 334 treesize of output 301 [2024-11-28 05:30:58,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:58,146 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 474 treesize of output 457 [2024-11-28 05:30:58,158 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 180 treesize of output 172 [2024-11-28 05:30:58,167 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 172 treesize of output 164 [2024-11-28 05:30:58,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:30:58,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 154 [2024-11-28 05:30:58,228 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 74 treesize of output 70 [2024-11-28 05:31:07,937 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:31:07,938 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 64 [2024-11-28 05:31:07,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:31:07,962 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 48 [2024-11-28 05:31:07,977 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 80 treesize of output 68 [2024-11-28 05:31:08,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:31:08,135 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 128 treesize of output 119 [2024-11-28 05:31:08,188 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 74 treesize of output 66 [2024-11-28 05:31:08,203 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 96 treesize of output 84 [2024-11-28 05:31:08,239 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 58 treesize of output 54 [2024-11-28 05:31:10,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [563889451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:31:10,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:31:10,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 26 [2024-11-28 05:31:10,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883397699] [2024-11-28 05:31:10,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:31:10,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 05:31:10,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:31:10,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 05:31:10,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1018, Unknown=8, NotChecked=568, Total=1722 [2024-11-28 05:31:10,468 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 23 states have internal predecessors, (73), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:31:13,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:31:13,239 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2024-11-28 05:31:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:31:13,240 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 23 states have internal predecessors, (73), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2024-11-28 05:31:13,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:31:13,241 INFO L225 Difference]: With dead ends: 98 [2024-11-28 05:31:13,241 INFO L226 Difference]: Without dead ends: 98 [2024-11-28 05:31:13,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=175, Invalid=1331, Unknown=8, NotChecked=648, Total=2162 [2024-11-28 05:31:13,242 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:31:13,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 623 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 05:31:13,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-28 05:31:13,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2024-11-28 05:31:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 92 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:31:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2024-11-28 05:31:13,247 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 47 [2024-11-28 05:31:13,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:31:13,247 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2024-11-28 05:31:13,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 23 states have internal predecessors, (73), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:31:13,250 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2024-11-28 05:31:13,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 05:31:13,250 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:31:13,251 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:31:13,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 05:31:13,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-11-28 05:31:13,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:31:13,651 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:31:13,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:31:13,652 INFO L85 PathProgramCache]: Analyzing trace with hash -829338825, now seen corresponding path program 1 times [2024-11-28 05:31:13,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:31:13,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170125121] [2024-11-28 05:31:13,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:31:13,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:31:13,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:31:13,655 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:31:13,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 05:31:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:31:13,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 05:31:13,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:31:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 05:31:14,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:31:14,148 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-28 05:31:14,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 05:31:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 05:31:14,195 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:31:14,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170125121] [2024-11-28 05:31:14,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170125121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:31:14,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:31:14,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2024-11-28 05:31:14,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423752325] [2024-11-28 05:31:14,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:31:14,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:31:14,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:31:14,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:31:14,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:31:14,197 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:31:14,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:31:14,753 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2024-11-28 05:31:14,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:31:14,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2024-11-28 05:31:14,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:31:14,755 INFO L225 Difference]: With dead ends: 111 [2024-11-28 05:31:14,755 INFO L226 Difference]: Without dead ends: 111 [2024-11-28 05:31:14,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:31:14,755 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 19 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:31:14,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 168 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:31:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-28 05:31:14,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2024-11-28 05:31:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 96 states have (on average 1.2708333333333333) internal successors, (122), 103 states have internal predecessors, (122), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:31:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 128 transitions. [2024-11-28 05:31:14,761 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 128 transitions. Word has length 47 [2024-11-28 05:31:14,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:31:14,762 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 128 transitions. [2024-11-28 05:31:14,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:31:14,762 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 128 transitions. [2024-11-28 05:31:14,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 05:31:14,763 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:31:14,763 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:31:14,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 05:31:14,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:31:14,964 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:31:14,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:31:14,964 INFO L85 PathProgramCache]: Analyzing trace with hash -829338824, now seen corresponding path program 1 times [2024-11-28 05:31:14,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:31:14,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661411372] [2024-11-28 05:31:14,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:31:14,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:31:14,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:31:14,966 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:31:14,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 05:31:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:31:15,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:31:15,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:31:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:31:15,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:31:16,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:31:16,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2024-11-28 05:31:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:31:17,460 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:31:17,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661411372] [2024-11-28 05:31:17,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661411372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:31:17,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:31:17,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2024-11-28 05:31:17,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161671589] [2024-11-28 05:31:17,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:31:17,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:31:17,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:31:17,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:31:17,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:31:17,462 INFO L87 Difference]: Start difference. First operand 108 states and 128 transitions. Second operand has 18 states, 17 states have (on average 4.588235294117647) internal successors, (78), 16 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:31:19,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:31:19,686 INFO L93 Difference]: Finished difference Result 115 states and 132 transitions. [2024-11-28 05:31:19,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:31:19,687 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.588235294117647) internal successors, (78), 16 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2024-11-28 05:31:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:31:19,688 INFO L225 Difference]: With dead ends: 115 [2024-11-28 05:31:19,688 INFO L226 Difference]: Without dead ends: 115 [2024-11-28 05:31:19,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:31:19,688 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 28 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:31:19,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 342 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 05:31:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-28 05:31:19,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2024-11-28 05:31:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 100 states have (on average 1.24) internal successors, (124), 107 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:31:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2024-11-28 05:31:19,692 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 47 [2024-11-28 05:31:19,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:31:19,692 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2024-11-28 05:31:19,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.588235294117647) internal successors, (78), 16 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:31:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2024-11-28 05:31:19,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 05:31:19,693 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:31:19,693 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:31:19,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 05:31:19,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:31:19,894 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:31:19,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:31:19,894 INFO L85 PathProgramCache]: Analyzing trace with hash 803680707, now seen corresponding path program 1 times [2024-11-28 05:31:19,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:31:19,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34217420] [2024-11-28 05:31:19,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:31:19,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:31:19,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:31:19,896 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:31:19,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 05:31:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:31:20,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 05:31:20,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:31:20,625 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:31:20,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:31:20,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:31:20,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:31:20,805 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 16 treesize of output 8 [2024-11-28 05:31:20,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:31:20,977 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 7 treesize of output 3 [2024-11-28 05:31:21,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 29 [2024-11-28 05:31:21,162 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 19 treesize of output 11 [2024-11-28 05:31:21,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:31:21,528 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2024-11-28 05:31:21,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2024-11-28 05:31:21,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:31:21,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:31:21,886 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:31:21,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 05:31:21,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:31:21,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:31:21,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:31:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:31:22,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:31:22,588 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1787 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1786 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv20 64) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1786) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1787) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (forall ((v_ArrVal_1786 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1786) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd (_ bv16 64) .cse0) (bvadd (_ bv20 64) .cse0))))) is different from false [2024-11-28 05:31:22,652 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_1787 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1786 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv20 64) (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1786) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1787) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (forall ((v_ArrVal_1786 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1786) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (bvule (bvadd (_ bv16 64) .cse1) (bvadd (_ bv20 64) .cse1)))))) is different from false [2024-11-28 05:31:22,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:31:22,706 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2024-11-28 05:31:22,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:31:22,722 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-28 05:31:22,728 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 52 treesize of output 44 [2024-11-28 05:31:22,744 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 82 treesize of output 70 [2024-11-28 05:31:22,760 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 11 treesize of output 9 [2024-11-28 05:31:22,765 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 9 treesize of output 7 [2024-11-28 05:31:22,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:31:22,794 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2024-11-28 05:31:22,805 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 44 treesize of output 32 [2024-11-28 05:31:24,584 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:31:24,584 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 72 [2024-11-28 05:31:24,594 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 53 treesize of output 47 [2024-11-28 05:31:25,147 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:31:25,147 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2024-11-28 05:31:25,152 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 37 treesize of output 29 [2024-11-28 05:31:25,169 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 8 treesize of output 6 [2024-11-28 05:31:25,209 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-28 05:31:25,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2024-11-28 05:31:25,611 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:31:25,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34217420] [2024-11-28 05:31:25,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34217420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:31:25,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [102146536] [2024-11-28 05:31:25,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:31:25,612 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:31:25,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:31:25,615 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:31:25,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-28 05:31:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:31:26,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 05:31:26,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:31:26,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:31:27,041 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:31:27,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 12 [2024-11-28 05:31:27,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:31:27,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:31:27,547 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:31:27,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 38 [2024-11-28 05:31:27,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:31:27,579 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 16 treesize of output 8 [2024-11-28 05:31:27,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:31:27,883 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 7 treesize of output 3 [2024-11-28 05:31:28,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:31:28,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:31:28,528 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 15 treesize of output 1 [2024-11-28 05:31:28,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2024-11-28 05:31:28,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2024-11-28 05:31:29,174 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:31:29,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2024-11-28 05:31:29,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:31:29,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 05:31:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:31:29,192 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:31:35,096 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1891 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (_ bv8 64) (select (select (store |c_#memory_$Pointer$#0.offset| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1891) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) is different from false [2024-11-28 05:31:35,651 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1889 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1891 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1890 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (_ bv8 64) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1889) (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1890) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_1891)) |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) is different from false [2024-11-28 05:31:35,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:31:35,676 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2024-11-28 05:31:35,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:31:35,689 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-28 05:31:35,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 45 [2024-11-28 05:31:35,700 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 177 treesize of output 161 [2024-11-28 05:31:35,715 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 6 treesize of output 4 [2024-11-28 05:31:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-28 05:31:36,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [102146536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:31:36,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:31:36,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 23] total 57 [2024-11-28 05:31:36,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590316609] [2024-11-28 05:31:36,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:31:36,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 05:31:36,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:31:36,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 05:31:36,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=4093, Unknown=63, NotChecked=532, Total=4970 [2024-11-28 05:31:36,907 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand has 58 states, 57 states have (on average 2.017543859649123) internal successors, (115), 48 states have internal predecessors, (115), 6 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 05:31:42,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:31:42,374 INFO L93 Difference]: Finished difference Result 111 states and 129 transitions. [2024-11-28 05:31:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:31:42,376 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.017543859649123) internal successors, (115), 48 states have internal predecessors, (115), 6 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 52 [2024-11-28 05:31:42,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:31:42,377 INFO L225 Difference]: With dead ends: 111 [2024-11-28 05:31:42,377 INFO L226 Difference]: Without dead ends: 111 [2024-11-28 05:31:42,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 111 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 4 IntricatePredicates, 2 DeprecatedPredicates, 1904 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=429, Invalid=5223, Unknown=64, NotChecked=604, Total=6320 [2024-11-28 05:31:42,379 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 39 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:31:42,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 945 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 558 Invalid, 0 Unknown, 54 Unchecked, 3.3s Time] [2024-11-28 05:31:42,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-28 05:31:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-28 05:31:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 100 states have (on average 1.23) internal successors, (123), 106 states have internal predecessors, (123), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:31:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2024-11-28 05:31:42,384 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 52 [2024-11-28 05:31:42,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:31:42,384 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2024-11-28 05:31:42,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.017543859649123) internal successors, (115), 48 states have internal predecessors, (115), 6 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 05:31:42,384 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2024-11-28 05:31:42,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 05:31:42,385 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:31:42,385 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:31:42,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 05:31:42,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-28 05:31:42,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:31:42,790 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-11-28 05:31:42,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:31:42,790 INFO L85 PathProgramCache]: Analyzing trace with hash -955575737, now seen corresponding path program 2 times [2024-11-28 05:31:42,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:31:42,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692535576] [2024-11-28 05:31:42,790 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:31:42,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:31:42,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:31:42,793 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:31:42,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a502bc-2a1e-4136-8a2c-a2b327a69d64/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 05:31:43,854 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:31:43,854 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:31:43,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 05:31:43,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:31:44,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:31:44,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:31:44,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 05:31:44,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 05:31:44,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-28 05:31:44,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-28 05:31:44,408 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:31:44,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:31:44,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2024-11-28 05:31:44,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2024-11-28 05:31:45,044 INFO L349 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2024-11-28 05:31:45,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 60 [2024-11-28 05:31:45,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2024-11-28 05:31:45,555 INFO L349 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2024-11-28 05:31:45,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 107 treesize of output 75 [2024-11-28 05:31:45,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 39 [2024-11-28 05:31:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:31:47,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:31:47,900 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base|)) (.cse1 (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base|)) (.cse2 (bvadd (_ bv16 64) |c_ULTIMATE.start_create_#t~mem9#1.offset|))) (and (forall ((v_ArrVal_1978 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_1977 (_ BitVec 64))) (= (_ bv0 64) (let ((.cse0 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| (store .cse1 .cse2 v_ArrVal_1977)))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1978) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) (not (= v_ArrVal_1978 (store .cse3 .cse2 (select v_ArrVal_1978 .cse2)))))) (forall ((v_ArrVal_1978 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= v_ArrVal_1978 (store .cse3 .cse2 (select v_ArrVal_1978 .cse2)))) (forall ((v_ArrVal_1977 (_ BitVec 64))) (= (_ bv0 64) (select (let ((.cse4 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1978))) (select .cse4 (select (select .cse4 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| (store .cse1 .cse2 v_ArrVal_1977)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))))))) is different from false [2024-11-28 05:31:48,062 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse2 (select |c_#memory_$Pointer$#0.offset| .cse1)) (.cse4 (select |c_#memory_$Pointer$#0.base| .cse1)) (.cse3 (bvadd (_ bv16 64) (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (and (forall ((v_ArrVal_1978 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_1977 (_ BitVec 64))) (= (_ bv0 64) (let ((.cse0 (store |c_#memory_$Pointer$#0.offset| .cse1 (store .cse2 .cse3 v_ArrVal_1977)))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_1978) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))) (not (= v_ArrVal_1978 (store .cse4 .cse3 (select v_ArrVal_1978 .cse3)))))) (forall ((v_ArrVal_1978 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_1977 (_ BitVec 64))) (= (_ bv0 64) (select (let ((.cse5 (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_1978))) (select .cse5 (select (select .cse5 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 (store .cse2 .cse3 v_ArrVal_1977)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))) (not (= v_ArrVal_1978 (store .cse4 .cse3 (select v_ArrVal_1978 .cse3))))))))) is different from false [2024-11-28 05:31:48,383 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse8 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_#t~mem8#1.offset|))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base|) .cse8 |c_ULTIMATE.start_create_~now~0#1.base|)))) (let ((.cse5 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base|) .cse8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (.cse4 (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse6 (select .cse5 .cse4)) (.cse0 (select .cse3 .cse4)) (.cse1 (bvadd (_ bv16 64) (select (select .cse5 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (and (forall ((v_ArrVal_1978 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= v_ArrVal_1978 (store .cse0 .cse1 (select v_ArrVal_1978 .cse1)))) (forall ((v_ArrVal_1977 (_ BitVec 64))) (= (_ bv0 64) (let ((.cse2 (store .cse5 .cse4 (store .cse6 .cse1 v_ArrVal_1977)))) (select (select .cse2 (select (select (store .cse3 .cse4 v_ArrVal_1978) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select (select .cse2 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))))))) (forall ((v_ArrVal_1978 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_1977 (_ BitVec 64))) (= (select (let ((.cse7 (store .cse3 .cse4 v_ArrVal_1978))) (select .cse7 (select (select .cse7 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (select (select (store .cse5 .cse4 (store .cse6 .cse1 v_ArrVal_1977)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (_ bv0 64))) (not (= v_ArrVal_1978 (store .cse0 .cse1 (select v_ArrVal_1978 .cse1))))))))))) is different from false [2024-11-28 05:31:48,671 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse8 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)) (.cse9 (bvadd (_ bv8 64) (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| .cse8 (store (select |c_#memory_$Pointer$#0.base| .cse8) .cse9 |c_ULTIMATE.start_create_~now~0#1.base|)))) (let ((.cse5 (store |c_#memory_$Pointer$#0.offset| .cse8 (store (select |c_#memory_$Pointer$#0.offset| .cse8) .cse9 |c_ULTIMATE.start_create_~now~0#1.offset|))) (.cse4 (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse0 (select .cse3 .cse4)) (.cse6 (select .cse5 .cse4)) (.cse1 (bvadd (_ bv16 64) (select (select .cse5 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (and (forall ((v_ArrVal_1978 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= v_ArrVal_1978 (store .cse0 .cse1 (select v_ArrVal_1978 .cse1)))) (forall ((v_ArrVal_1977 (_ BitVec 64))) (= (select (let ((.cse2 (store .cse3 .cse4 v_ArrVal_1978))) (select .cse2 (select (select .cse2 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (select (select (store .cse5 .cse4 (store .cse6 .cse1 v_ArrVal_1977)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (_ bv0 64))))) (forall ((v_ArrVal_1978 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= v_ArrVal_1978 (store .cse0 .cse1 (select v_ArrVal_1978 .cse1)))) (forall ((v_ArrVal_1977 (_ BitVec 64))) (= (let ((.cse7 (store .cse5 .cse4 (store .cse6 .cse1 v_ArrVal_1977)))) (select (select .cse7 (select (select (store .cse3 .cse4 v_ArrVal_1978) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select (select .cse7 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (_ bv0 64)))))))))) is different from false [2024-11-28 05:31:49,538 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse9 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_#t~ret7#1.offset|))) (let ((.cse3 (let ((.cse10 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |c_ULTIMATE.start_create_#t~ret7#1.base|)))) (store .cse10 |c_ULTIMATE.start_create_#t~ret7#1.base| (store (select .cse10 |c_ULTIMATE.start_create_#t~ret7#1.base|) .cse9 |c_ULTIMATE.start_create_~now~0#1.base|))))) (let ((.cse5 (let ((.cse8 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |c_ULTIMATE.start_create_#t~ret7#1.offset|)))) (store .cse8 |c_ULTIMATE.start_create_#t~ret7#1.base| (store (select .cse8 |c_ULTIMATE.start_create_#t~ret7#1.base|) .cse9 |c_ULTIMATE.start_create_~now~0#1.offset|)))) (.cse4 (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse6 (select .cse5 .cse4)) (.cse0 (select .cse3 .cse4)) (.cse1 (bvadd (_ bv16 64) (select (select .cse5 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|)))) (and (forall ((v_ArrVal_1978 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= v_ArrVal_1978 (store .cse0 .cse1 (select v_ArrVal_1978 .cse1)))) (forall ((v_ArrVal_1977 (_ BitVec 64))) (= (_ bv0 64) (select (let ((.cse2 (store .cse3 .cse4 v_ArrVal_1978))) (select .cse2 (select (select .cse2 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (select (select (store .cse5 .cse4 (store .cse6 .cse1 v_ArrVal_1977)) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)))))) (forall ((v_ArrVal_1978 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_1977 (_ BitVec 64))) (= (let ((.cse7 (store .cse5 .cse4 (store .cse6 .cse1 v_ArrVal_1977)))) (select (select .cse7 (select (select (store .cse3 .cse4 v_ArrVal_1978) |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|)) (select (select .cse7 |c_ULTIMATE.start_create_~dll~0#1.base|) |c_ULTIMATE.start_create_~dll~0#1.offset|))) (_ bv0 64))) (not (= v_ArrVal_1978 (store .cse0 .cse1 (select v_ArrVal_1978 .cse1))))))))))) is different from false [2024-11-28 05:32:17,625 WARN L286 SmtUtils]: Spent 25.34s on a formula simplification. DAG size of input: 160 DAG size of output: 82 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 05:32:17,626 INFO L349 Elim1Store]: treesize reduction 248, result has 35.4 percent of original size [2024-11-28 05:32:17,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 29 case distinctions, treesize of input 98537 treesize of output 54572 [2024-11-28 05:32:20,637 INFO L224 Elim1Store]: Index analysis took 479 ms [2024-11-28 05:33:09,498 WARN L286 SmtUtils]: Spent 48.78s on a formula simplification. DAG size of input: 169 DAG size of output: 91 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 05:33:09,498 INFO L349 Elim1Store]: treesize reduction 521, result has 32.7 percent of original size [2024-11-28 05:33:09,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 29 case distinctions, treesize of input 46882342 treesize of output 24912131 [2024-11-28 05:33:12,622 INFO L224 Elim1Store]: Index analysis took 743 ms [2024-11-28 05:33:40,902 WARN L286 SmtUtils]: Spent 28.27s on a formula simplification. DAG size of input: 202 DAG size of output: 98 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 05:33:40,903 INFO L349 Elim1Store]: treesize reduction 572, result has 32.9 percent of original size [2024-11-28 05:33:40,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 37 case distinctions, treesize of input 37634 treesize of output 30913 [2024-11-28 05:33:42,239 INFO L224 Elim1Store]: Index analysis took 942 ms [2024-11-28 05:34:35,529 WARN L286 SmtUtils]: Spent 53.28s on a formula simplification. DAG size of input: 140 DAG size of output: 136 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 05:34:35,530 INFO L349 Elim1Store]: treesize reduction 8, result has 98.4 percent of original size [2024-11-28 05:34:35,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 30691 treesize of output 29505 [2024-11-28 05:34:36,624 INFO L224 Elim1Store]: Index analysis took 147 ms [2024-11-28 05:35:08,407 WARN L286 SmtUtils]: Spent 31.78s on a formula simplification. DAG size of input: 194 DAG size of output: 90 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 05:35:08,408 INFO L349 Elim1Store]: treesize reduction 291, result has 34.8 percent of original size [2024-11-28 05:35:08,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 37 case distinctions, treesize of input 29816 treesize of output 24098 [2024-11-28 05:36:00,851 WARN L286 SmtUtils]: Spent 50.56s on a formula simplification. DAG size of input: 132 DAG size of output: 128 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 05:36:00,852 INFO L349 Elim1Store]: treesize reduction 8, result has 96.8 percent of original size [2024-11-28 05:36:00,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 29654 treesize of output 24368