./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a27e6fc2049c9dc12360bd8cd7682ef33f4a19a5a5a6c0e7a780c3703a0494b5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:48:14,878 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:48:14,935 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 12:48:14,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:48:14,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:48:14,960 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:48:14,961 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:48:14,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:48:14,961 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:48:14,961 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:48:14,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:48:14,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:48:14,962 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:48:14,962 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:48:14,963 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:48:14,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:48:14,963 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:48:14,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:48:14,963 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:48:14,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:48:14,963 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 12:48:14,963 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 12:48:14,964 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 12:48:14,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:48:14,964 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 12:48:14,964 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:48:14,964 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:48:14,964 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:48:14,964 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:48:14,964 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:48:14,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:48:14,965 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:48:14,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:48:14,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:48:14,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:48:14,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:48:14,965 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:48:14,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:48:14,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:48:14,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:48:14,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:48:14,966 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:48:14,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:48:14,966 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:48:14,966 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:48:14,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:48:14,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:48:14,966 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_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a27e6fc2049c9dc12360bd8cd7682ef33f4a19a5a5a6c0e7a780c3703a0494b5 [2024-12-02 12:48:15,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:48:15,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:48:15,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:48:15,201 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:48:15,201 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:48:15,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i [2024-12-02 12:48:17,837 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/data/cda0e4926/a32b47fe85cd4ff7adaf65e972273b0f/FLAG343b71111 [2024-12-02 12:48:18,073 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:48:18,074 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/sv-benchmarks/c/array-memsafety-realloc/array-realloc-2.i [2024-12-02 12:48:18,086 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/data/cda0e4926/a32b47fe85cd4ff7adaf65e972273b0f/FLAG343b71111 [2024-12-02 12:48:18,097 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/data/cda0e4926/a32b47fe85cd4ff7adaf65e972273b0f [2024-12-02 12:48:18,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:48:18,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:48:18,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:48:18,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:48:18,103 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:48:18,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43052adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18, skipping insertion in model container [2024-12-02 12:48:18,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,125 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:48:18,348 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:48:18,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:48:18,362 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:48:18,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:48:18,420 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:48:18,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18 WrapperNode [2024-12-02 12:48:18,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:48:18,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:48:18,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:48:18,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:48:18,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,437 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,454 INFO L138 Inliner]: procedures = 119, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2024-12-02 12:48:18,454 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:48:18,454 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:48:18,454 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:48:18,455 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:48:18,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,472 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-12-02 12:48:18,473 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,473 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,481 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,482 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:48:18,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:48:18,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:48:18,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:48:18,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (1/1) ... [2024-12-02 12:48:18,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:48:18,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:18,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:48:18,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:48:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-02 12:48:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 12:48:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 12:48:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-02 12:48:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-02 12:48:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 12:48:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-12-02 12:48:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:48:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:48:18,646 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:48:18,648 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:48:18,822 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-12-02 12:48:18,822 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:48:18,832 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:48:18,832 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 12:48:18,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:18 BoogieIcfgContainer [2024-12-02 12:48:18,832 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:48:18,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:48:18,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:48:18,839 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:48:18,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:48:18" (1/3) ... [2024-12-02 12:48:18,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1669fbf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:48:18, skipping insertion in model container [2024-12-02 12:48:18,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:18" (2/3) ... [2024-12-02 12:48:18,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1669fbf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:48:18, skipping insertion in model container [2024-12-02 12:48:18,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:18" (3/3) ... [2024-12-02 12:48:18,842 INFO L128 eAbstractionObserver]: Analyzing ICFG array-realloc-2.i [2024-12-02 12:48:18,855 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:48:18,856 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array-realloc-2.i that has 1 procedures, 38 locations, 1 initial locations, 1 loop locations, and 14 error locations. [2024-12-02 12:48:18,891 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:48:18,901 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6adda090, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:48:18,901 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-12-02 12:48:18,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:18,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-02 12:48:18,909 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:18,910 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-12-02 12:48:18,910 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:18,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:18,915 INFO L85 PathProgramCache]: Analyzing trace with hash 925664, now seen corresponding path program 1 times [2024-12-02 12:48:18,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:18,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589784469] [2024-12-02 12:48:18,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:18,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:19,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:19,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589784469] [2024-12-02 12:48:19,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589784469] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:19,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:19,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:48:19,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631214341] [2024-12-02 12:48:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:19,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:48:19,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:19,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:48:19,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:48:19,082 INFO L87 Difference]: Start difference. First operand has 38 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:19,141 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-12-02 12:48:19,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:48:19,144 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-12-02 12:48:19,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:19,148 INFO L225 Difference]: With dead ends: 39 [2024-12-02 12:48:19,148 INFO L226 Difference]: Without dead ends: 36 [2024-12-02 12:48:19,150 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 [2024-12-02 12:48:19,152 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:19,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:19,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-12-02 12:48:19,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-12-02 12:48:19,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-12-02 12:48:19,182 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 4 [2024-12-02 12:48:19,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:19,182 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-12-02 12:48:19,182 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,183 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-12-02 12:48:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-02 12:48:19,183 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:19,183 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-12-02 12:48:19,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:48:19,183 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:19,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:19,184 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2024-12-02 12:48:19,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:19,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008830775] [2024-12-02 12:48:19,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:19,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:19,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:19,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008830775] [2024-12-02 12:48:19,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008830775] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:19,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:19,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:48:19,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005246148] [2024-12-02 12:48:19,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:19,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:48:19,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:19,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:48:19,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:48:19,311 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:19,399 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2024-12-02 12:48:19,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:48:19,400 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-12-02 12:48:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:19,400 INFO L225 Difference]: With dead ends: 54 [2024-12-02 12:48:19,400 INFO L226 Difference]: Without dead ends: 54 [2024-12-02 12:48:19,401 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 [2024-12-02 12:48:19,401 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 27 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:19,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 35 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:48:19,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-12-02 12:48:19,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2024-12-02 12:48:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 47 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2024-12-02 12:48:19,407 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 4 [2024-12-02 12:48:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:19,408 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2024-12-02 12:48:19,408 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,408 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2024-12-02 12:48:19,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-02 12:48:19,408 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:19,408 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-12-02 12:48:19,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:48:19,409 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:19,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash 925670, now seen corresponding path program 1 times [2024-12-02 12:48:19,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:19,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140268162] [2024-12-02 12:48:19,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:19,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:19,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:19,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140268162] [2024-12-02 12:48:19,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140268162] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:19,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:19,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:48:19,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254241130] [2024-12-02 12:48:19,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:19,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:48:19,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:19,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:48:19,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:48:19,525 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:19,582 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2024-12-02 12:48:19,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:48:19,583 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-12-02 12:48:19,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:19,585 INFO L225 Difference]: With dead ends: 57 [2024-12-02 12:48:19,585 INFO L226 Difference]: Without dead ends: 57 [2024-12-02 12:48:19,585 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 [2024-12-02 12:48:19,586 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:19,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 49 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:19,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-12-02 12:48:19,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2024-12-02 12:48:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 50 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2024-12-02 12:48:19,593 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 4 [2024-12-02 12:48:19,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:19,593 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2024-12-02 12:48:19,593 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,593 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2024-12-02 12:48:19,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 12:48:19,594 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:19,594 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 12:48:19,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:48:19,594 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:19,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:19,595 INFO L85 PathProgramCache]: Analyzing trace with hash 889567417, now seen corresponding path program 1 times [2024-12-02 12:48:19,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:19,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013275441] [2024-12-02 12:48:19,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:19,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:19,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:19,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013275441] [2024-12-02 12:48:19,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013275441] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:19,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:19,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:48:19,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786457779] [2024-12-02 12:48:19,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:19,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:48:19,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:19,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:48:19,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:19,647 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:19,693 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2024-12-02 12:48:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:48:19,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-12-02 12:48:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:19,695 INFO L225 Difference]: With dead ends: 64 [2024-12-02 12:48:19,695 INFO L226 Difference]: Without dead ends: 64 [2024-12-02 12:48:19,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:48:19,696 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:19,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 81 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-12-02 12:48:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2024-12-02 12:48:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.641025641025641) internal successors, (64), 50 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2024-12-02 12:48:19,700 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 6 [2024-12-02 12:48:19,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:19,701 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2024-12-02 12:48:19,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2024-12-02 12:48:19,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-02 12:48:19,701 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:19,701 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:19,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:48:19,702 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:19,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:19,702 INFO L85 PathProgramCache]: Analyzing trace with hash 175812972, now seen corresponding path program 1 times [2024-12-02 12:48:19,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:19,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492584693] [2024-12-02 12:48:19,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:19,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:19,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:19,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492584693] [2024-12-02 12:48:19,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492584693] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:19,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:19,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:48:19,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359449019] [2024-12-02 12:48:19,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:19,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:48:19,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:19,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:48:19,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:19,767 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:19,862 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2024-12-02 12:48:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:48:19,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-12-02 12:48:19,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:19,863 INFO L225 Difference]: With dead ends: 61 [2024-12-02 12:48:19,863 INFO L226 Difference]: Without dead ends: 61 [2024-12-02 12:48:19,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:48:19,864 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 47 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:19,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 46 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:48:19,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-12-02 12:48:19,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2024-12-02 12:48:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 53 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2024-12-02 12:48:19,870 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 8 [2024-12-02 12:48:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:19,870 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2024-12-02 12:48:19,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2024-12-02 12:48:19,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-02 12:48:19,871 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:19,871 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:19,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:48:19,871 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:19,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash 175812973, now seen corresponding path program 1 times [2024-12-02 12:48:19,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:19,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702035537] [2024-12-02 12:48:19,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:19,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:19,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:19,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702035537] [2024-12-02 12:48:19,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702035537] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:19,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:19,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:48:19,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714841639] [2024-12-02 12:48:19,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:19,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:48:19,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:19,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:48:19,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:48:19,976 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:20,040 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2024-12-02 12:48:20,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:48:20,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-12-02 12:48:20,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:20,041 INFO L225 Difference]: With dead ends: 58 [2024-12-02 12:48:20,041 INFO L226 Difference]: Without dead ends: 58 [2024-12-02 12:48:20,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:48:20,042 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 43 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:20,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 67 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:20,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-12-02 12:48:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-12-02 12:48:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 45 states have (on average 1.5777777777777777) internal successors, (71), 55 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2024-12-02 12:48:20,047 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 8 [2024-12-02 12:48:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:20,047 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2024-12-02 12:48:20,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,047 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2024-12-02 12:48:20,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-02 12:48:20,047 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:20,048 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:20,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:48:20,048 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:20,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:20,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1455251441, now seen corresponding path program 1 times [2024-12-02 12:48:20,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:20,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034682270] [2024-12-02 12:48:20,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:20,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:20,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:20,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034682270] [2024-12-02 12:48:20,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034682270] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:20,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:20,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:48:20,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531092080] [2024-12-02 12:48:20,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:20,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:48:20,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:20,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:48:20,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:20,094 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:20,117 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2024-12-02 12:48:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:48:20,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-12-02 12:48:20,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:20,118 INFO L225 Difference]: With dead ends: 53 [2024-12-02 12:48:20,118 INFO L226 Difference]: Without dead ends: 53 [2024-12-02 12:48:20,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:20,119 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 32 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:20,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 57 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-12-02 12:48:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-12-02 12:48:20,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 52 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2024-12-02 12:48:20,124 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 10 [2024-12-02 12:48:20,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:20,124 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2024-12-02 12:48:20,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,124 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2024-12-02 12:48:20,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 12:48:20,125 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:20,125 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:20,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:48:20,125 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:20,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:20,126 INFO L85 PathProgramCache]: Analyzing trace with hash 868891384, now seen corresponding path program 1 times [2024-12-02 12:48:20,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:20,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630280883] [2024-12-02 12:48:20,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:20,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:20,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:20,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630280883] [2024-12-02 12:48:20,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630280883] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:20,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:20,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:48:20,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555192714] [2024-12-02 12:48:20,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:20,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:48:20,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:20,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:48:20,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:20,188 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:20,253 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2024-12-02 12:48:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:48:20,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-12-02 12:48:20,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:20,254 INFO L225 Difference]: With dead ends: 52 [2024-12-02 12:48:20,254 INFO L226 Difference]: Without dead ends: 52 [2024-12-02 12:48:20,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:20,255 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:20,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:48:20,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-12-02 12:48:20,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-12-02 12:48:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 51 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2024-12-02 12:48:20,259 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 13 [2024-12-02 12:48:20,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:20,259 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2024-12-02 12:48:20,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,260 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2024-12-02 12:48:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 12:48:20,260 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:20,260 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:20,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:48:20,261 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:20,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:20,261 INFO L85 PathProgramCache]: Analyzing trace with hash 868891385, now seen corresponding path program 1 times [2024-12-02 12:48:20,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:20,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227355393] [2024-12-02 12:48:20,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:20,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:20,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:20,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227355393] [2024-12-02 12:48:20,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227355393] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:20,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:48:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456976381] [2024-12-02 12:48:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:20,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:48:20,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:20,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:48:20,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:48:20,351 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:20,428 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-12-02 12:48:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:48:20,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-12-02 12:48:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:20,429 INFO L225 Difference]: With dead ends: 41 [2024-12-02 12:48:20,429 INFO L226 Difference]: Without dead ends: 41 [2024-12-02 12:48:20,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:20,430 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 7 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:20,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:20,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-12-02 12:48:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-12-02 12:48:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-12-02 12:48:20,433 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 13 [2024-12-02 12:48:20,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:20,433 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-12-02 12:48:20,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,433 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-12-02 12:48:20,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 12:48:20,434 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:20,434 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:20,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:48:20,434 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:20,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:20,434 INFO L85 PathProgramCache]: Analyzing trace with hash 868950967, now seen corresponding path program 1 times [2024-12-02 12:48:20,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:20,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446136609] [2024-12-02 12:48:20,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:20,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:20,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:20,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446136609] [2024-12-02 12:48:20,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446136609] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:20,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:20,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:48:20,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766716162] [2024-12-02 12:48:20,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:20,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:48:20,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:20,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:48:20,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:48:20,621 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:20,744 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2024-12-02 12:48:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:48:20,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-12-02 12:48:20,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:20,745 INFO L225 Difference]: With dead ends: 63 [2024-12-02 12:48:20,745 INFO L226 Difference]: Without dead ends: 63 [2024-12-02 12:48:20,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:48:20,746 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:20,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 109 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:48:20,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-12-02 12:48:20,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2024-12-02 12:48:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2024-12-02 12:48:20,750 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 13 [2024-12-02 12:48:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:20,750 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2024-12-02 12:48:20,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:20,750 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2024-12-02 12:48:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-12-02 12:48:20,751 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:20,751 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:20,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:48:20,751 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:20,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:20,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1167676183, now seen corresponding path program 1 times [2024-12-02 12:48:20,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:20,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193806132] [2024-12-02 12:48:20,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:20,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:20,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:20,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193806132] [2024-12-02 12:48:20,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193806132] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:20,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:20,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 12:48:20,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601577407] [2024-12-02 12:48:20,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:20,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:48:20,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:20,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:48:20,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:48:20,982 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:21,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:21,129 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2024-12-02 12:48:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:48:21,130 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-12-02 12:48:21,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:21,130 INFO L225 Difference]: With dead ends: 49 [2024-12-02 12:48:21,130 INFO L226 Difference]: Without dead ends: 49 [2024-12-02 12:48:21,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:48:21,131 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 31 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:21,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 93 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:48:21,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-12-02 12:48:21,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2024-12-02 12:48:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2024-12-02 12:48:21,135 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 14 [2024-12-02 12:48:21,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:21,135 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2024-12-02 12:48:21,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:21,136 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2024-12-02 12:48:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-12-02 12:48:21,136 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:21,136 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:21,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 12:48:21,136 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:21,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:21,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1167676184, now seen corresponding path program 1 times [2024-12-02 12:48:21,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:21,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57166648] [2024-12-02 12:48:21,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:21,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:21,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:21,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57166648] [2024-12-02 12:48:21,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57166648] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:21,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:21,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:48:21,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129154073] [2024-12-02 12:48:21,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:21,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:48:21,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:21,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:48:21,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:48:21,402 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:21,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:21,609 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-12-02 12:48:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:48:21,610 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-12-02 12:48:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:21,610 INFO L225 Difference]: With dead ends: 43 [2024-12-02 12:48:21,610 INFO L226 Difference]: Without dead ends: 43 [2024-12-02 12:48:21,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:48:21,611 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:21,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 75 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:48:21,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-12-02 12:48:21,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-12-02 12:48:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:21,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-12-02 12:48:21,614 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 14 [2024-12-02 12:48:21,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:21,614 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-12-02 12:48:21,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:21,614 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-12-02 12:48:21,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-12-02 12:48:21,615 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:21,615 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:21,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:48:21,615 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:21,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1167684349, now seen corresponding path program 1 times [2024-12-02 12:48:21,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:21,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674894981] [2024-12-02 12:48:21,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:21,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:21,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:21,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674894981] [2024-12-02 12:48:21,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674894981] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:21,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:21,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:48:21,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218485505] [2024-12-02 12:48:21,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:21,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:48:21,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:21,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:48:21,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:21,665 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:21,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:21,681 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2024-12-02 12:48:21,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:48:21,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-12-02 12:48:21,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:21,682 INFO L225 Difference]: With dead ends: 42 [2024-12-02 12:48:21,682 INFO L226 Difference]: Without dead ends: 42 [2024-12-02 12:48:21,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:48:21,682 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:21,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 71 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:21,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-12-02 12:48:21,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-12-02 12:48:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:21,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-12-02 12:48:21,685 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 14 [2024-12-02 12:48:21,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:21,685 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-12-02 12:48:21,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:21,685 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-12-02 12:48:21,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-02 12:48:21,686 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:21,686 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:21,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:48:21,686 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:21,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash 478866619, now seen corresponding path program 1 times [2024-12-02 12:48:21,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:21,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654570386] [2024-12-02 12:48:21,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:21,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:21,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:21,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654570386] [2024-12-02 12:48:21,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654570386] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:21,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226424177] [2024-12-02 12:48:21,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:21,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:21,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:21,761 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:21,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:48:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:21,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 12:48:21,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:21,967 INFO L349 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2024-12-02 12:48:21,968 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 2 case distinctions, treesize of input 17 treesize of output 25 [2024-12-02 12:48:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:22,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:48:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:22,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226424177] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:48:22,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:48:22,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 10 [2024-12-02 12:48:22,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456380612] [2024-12-02 12:48:22,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:48:22,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:48:22,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:22,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:48:22,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:48:22,228 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:22,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:22,287 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-12-02 12:48:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:48:22,288 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-12-02 12:48:22,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:22,288 INFO L225 Difference]: With dead ends: 43 [2024-12-02 12:48:22,288 INFO L226 Difference]: Without dead ends: 43 [2024-12-02 12:48:22,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:48:22,289 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:22,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 38 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:48:22,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-12-02 12:48:22,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-12-02 12:48:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2024-12-02 12:48:22,292 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 19 [2024-12-02 12:48:22,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:22,293 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2024-12-02 12:48:22,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:22,293 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2024-12-02 12:48:22,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-02 12:48:22,293 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:22,294 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:22,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:48:22,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 12:48:22,494 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:22,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:22,495 INFO L85 PathProgramCache]: Analyzing trace with hash 478866620, now seen corresponding path program 1 times [2024-12-02 12:48:22,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:22,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549572428] [2024-12-02 12:48:22,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:22,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:22,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:22,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549572428] [2024-12-02 12:48:22,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549572428] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:22,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990182270] [2024-12-02 12:48:22,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:22,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:22,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:22,630 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:22,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:48:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:22,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:48:22,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:22,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:48:22,805 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 [2024-12-02 12:48:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:22,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:48:23,053 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 39 treesize of output 35 [2024-12-02 12:48:23,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:23,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990182270] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:48:23,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:48:23,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2024-12-02 12:48:23,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307111378] [2024-12-02 12:48:23,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:48:23,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:48:23,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:23,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:48:23,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:48:23,075 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:23,143 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-12-02 12:48:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:48:23,143 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-12-02 12:48:23,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:23,144 INFO L225 Difference]: With dead ends: 40 [2024-12-02 12:48:23,144 INFO L226 Difference]: Without dead ends: 40 [2024-12-02 12:48:23,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:48:23,145 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:23,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 58 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:23,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-12-02 12:48:23,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-12-02 12:48:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2024-12-02 12:48:23,148 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 19 [2024-12-02 12:48:23,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:23,148 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2024-12-02 12:48:23,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:23,148 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2024-12-02 12:48:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 12:48:23,148 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:23,149 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:23,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 12:48:23,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 12:48:23,349 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:23,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:23,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1959963329, now seen corresponding path program 1 times [2024-12-02 12:48:23,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:23,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273856146] [2024-12-02 12:48:23,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:23,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:23,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:23,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273856146] [2024-12-02 12:48:23,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273856146] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:23,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056632977] [2024-12-02 12:48:23,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:23,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:23,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:23,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:23,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:48:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:23,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 12:48:23,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:23,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 12:48:23,968 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 12:48:23,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 12:48:23,971 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 10 [2024-12-02 12:48:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:23,975 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:48:23,994 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 28 treesize of output 24 [2024-12-02 12:48:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:24,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056632977] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:48:24,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:48:24,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 19 [2024-12-02 12:48:24,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034292316] [2024-12-02 12:48:24,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:48:24,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 12:48:24,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:24,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 12:48:24,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:48:24,305 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:24,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:24,731 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2024-12-02 12:48:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 12:48:24,731 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-12-02 12:48:24,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:24,732 INFO L225 Difference]: With dead ends: 46 [2024-12-02 12:48:24,732 INFO L226 Difference]: Without dead ends: 46 [2024-12-02 12:48:24,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2024-12-02 12:48:24,733 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 49 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:24,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 84 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:48:24,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-12-02 12:48:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2024-12-02 12:48:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:24,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-12-02 12:48:24,735 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 20 [2024-12-02 12:48:24,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:24,735 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-12-02 12:48:24,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:24,735 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-12-02 12:48:24,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 12:48:24,736 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:24,736 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] [2024-12-02 12:48:24,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:48:24,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 12:48:24,936 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:24,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash 629321147, now seen corresponding path program 1 times [2024-12-02 12:48:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:24,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651080786] [2024-12-02 12:48:24,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:24,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:25,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:25,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651080786] [2024-12-02 12:48:25,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651080786] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:25,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696686556] [2024-12-02 12:48:25,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:25,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:25,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:25,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:25,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:48:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:25,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 12:48:25,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:25,342 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 [2024-12-02 12:48:25,430 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 12:48:25,432 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 12:48:25,433 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 17 treesize of output 12 [2024-12-02 12:48:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:25,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:48:25,468 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 28 treesize of output 24 [2024-12-02 12:48:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:25,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696686556] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:48:25,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:48:25,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 13 [2024-12-02 12:48:25,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997804733] [2024-12-02 12:48:25,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:48:25,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 12:48:25,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:25,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 12:48:25,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:48:25,556 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:25,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:25,720 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2024-12-02 12:48:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:48:25,720 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-12-02 12:48:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:25,721 INFO L225 Difference]: With dead ends: 39 [2024-12-02 12:48:25,721 INFO L226 Difference]: Without dead ends: 39 [2024-12-02 12:48:25,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:48:25,722 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:25,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 54 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:48:25,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-12-02 12:48:25,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-12-02 12:48:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2024-12-02 12:48:25,724 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 21 [2024-12-02 12:48:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:25,724 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2024-12-02 12:48:25,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2024-12-02 12:48:25,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-02 12:48:25,724 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:25,724 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] [2024-12-02 12:48:25,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:48:25,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 12:48:25,925 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:25,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:25,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1965880829, now seen corresponding path program 1 times [2024-12-02 12:48:25,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:25,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518577280] [2024-12-02 12:48:25,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:25,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:26,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:26,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518577280] [2024-12-02 12:48:26,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518577280] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:26,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181844987] [2024-12-02 12:48:26,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:26,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:26,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:26,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:26,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:48:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:26,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 12:48:26,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:26,231 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 [2024-12-02 12:48:26,307 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 12:48:26,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 12:48:26,309 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 17 treesize of output 12 [2024-12-02 12:48:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:26,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:48:26,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2024-12-02 12:48:26,371 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-12-02 12:48:26,371 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 [2024-12-02 12:48:26,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:26,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181844987] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:48:26,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:48:26,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 12 [2024-12-02 12:48:26,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968995951] [2024-12-02 12:48:26,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:48:26,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:48:26,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:26,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:48:26,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:48:26,426 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:26,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:26,518 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2024-12-02 12:48:26,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:48:26,518 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-12-02 12:48:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:26,518 INFO L225 Difference]: With dead ends: 38 [2024-12-02 12:48:26,519 INFO L226 Difference]: Without dead ends: 38 [2024-12-02 12:48:26,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:48:26,519 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:26,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 53 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:48:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-12-02 12:48:26,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2024-12-02 12:48:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2024-12-02 12:48:26,521 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 22 [2024-12-02 12:48:26,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:26,521 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2024-12-02 12:48:26,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:26,521 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2024-12-02 12:48:26,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-02 12:48:26,521 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:26,521 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:26,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:48:26,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 12:48:26,722 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:26,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:26,722 INFO L85 PathProgramCache]: Analyzing trace with hash 60243497, now seen corresponding path program 1 times [2024-12-02 12:48:26,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:26,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817325555] [2024-12-02 12:48:26,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:26,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:26,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:26,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817325555] [2024-12-02 12:48:26,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817325555] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:48:26,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:48:26,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:48:26,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721582943] [2024-12-02 12:48:26,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:48:26,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:48:26,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:26,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:48:26,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:48:26,834 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:26,892 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2024-12-02 12:48:26,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:48:26,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-12-02 12:48:26,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:26,892 INFO L225 Difference]: With dead ends: 34 [2024-12-02 12:48:26,893 INFO L226 Difference]: Without dead ends: 34 [2024-12-02 12:48:26,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:48:26,893 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:26,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 125 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:48:26,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-12-02 12:48:26,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-12-02 12:48:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 31 states have (on average 1.096774193548387) internal successors, (34), 33 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2024-12-02 12:48:26,895 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 23 [2024-12-02 12:48:26,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:26,895 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2024-12-02 12:48:26,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:26,895 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2024-12-02 12:48:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-02 12:48:26,896 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:26,896 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:26,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 12:48:26,896 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:26,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:26,896 INFO L85 PathProgramCache]: Analyzing trace with hash 60303079, now seen corresponding path program 1 times [2024-12-02 12:48:26,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:26,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144240825] [2024-12-02 12:48:26,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:26,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:27,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:27,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144240825] [2024-12-02 12:48:27,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144240825] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:27,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769991641] [2024-12-02 12:48:27,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:27,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:27,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:27,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:27,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:48:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:27,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 12:48:27,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:27,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-12-02 12:48:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:27,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:48:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:27,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769991641] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:48:27,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:48:27,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-12-02 12:48:27,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689870313] [2024-12-02 12:48:27,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:48:27,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 12:48:27,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:27,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 12:48:27,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:48:27,391 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:27,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:27,799 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2024-12-02 12:48:27,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 12:48:27,800 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-12-02 12:48:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:27,800 INFO L225 Difference]: With dead ends: 121 [2024-12-02 12:48:27,800 INFO L226 Difference]: Without dead ends: 121 [2024-12-02 12:48:27,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2024-12-02 12:48:27,801 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 163 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:27,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 194 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:48:27,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-12-02 12:48:27,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 73. [2024-12-02 12:48:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 72 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2024-12-02 12:48:27,804 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 23 [2024-12-02 12:48:27,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:27,804 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2024-12-02 12:48:27,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2024-12-02 12:48:27,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-02 12:48:27,805 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:27,805 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] [2024-12-02 12:48:27,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 12:48:28,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:28,006 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:28,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:28,006 INFO L85 PathProgramCache]: Analyzing trace with hash -812763458, now seen corresponding path program 1 times [2024-12-02 12:48:28,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:28,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862943739] [2024-12-02 12:48:28,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:28,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:28,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:28,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:28,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862943739] [2024-12-02 12:48:28,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862943739] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:28,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331910618] [2024-12-02 12:48:28,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:28,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:28,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:28,318 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:28,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:48:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:28,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-12-02 12:48:28,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:28,516 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 12:48:28,517 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2024-12-02 12:48:28,786 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 [2024-12-02 12:48:28,936 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 12:48:28,936 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2024-12-02 12:48:29,031 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#a~0#1.base_19| Int) (|v_ULTIMATE.start_main_#t~mem8#1.base_12| Int) (|v_ULTIMATE.start_#Ultimate.C_realloc_ptr#1.base_20| Int)) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#a~0#1.base_19| 1))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#a~0#1.base_19|) 0) (= (select (store .cse0 |v_ULTIMATE.start_#Ultimate.C_realloc_ptr#1.base_20| 0) |v_ULTIMATE.start_main_#t~mem8#1.base_12|) 0) (= (select .cse0 |v_ULTIMATE.start_#Ultimate.C_realloc_ptr#1.base_20|) 0) (= |c_#valid| (store (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_#Ultimate.C_realloc_ptr#1.base_20| 0) |v_ULTIMATE.start_main_#t~mem8#1.base_12| 0) |v_ULTIMATE.start_main_~#a~0#1.base_19| 0))))) is different from true [2024-12-02 12:48:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:29,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:48:29,056 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 48 treesize of output 44 [2024-12-02 12:48:41,368 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (store |c_#valid| |c_ULTIMATE.start_#Ultimate.C_realloc_ptr#1.base| 0))) (let ((.cse0 (= |c_ULTIMATE.start_expandArray_~pointer#1.base| |c_ULTIMATE.start_main_~#a~0#1.base|)) (.cse1 (forall ((v_arrayElimCell_17 Int) (v_antiDerIndex_entry0_1 Int) (|v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| Int) (v_ArrVal_448 Int)) (or (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store (store (store .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| v_ArrVal_448) v_arrayElimCell_17 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)) (not (= (select .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24|) 0))))) (.cse4 (= |c_ULTIMATE.start_main_~#a~0#1.offset| |c_ULTIMATE.start_expandArray_~pointer#1.offset|))) (and (or .cse0 .cse1) (forall ((|v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| Int)) (or (forall ((v_antiDerIndex_entry0_1 Int) (v_ArrVal_448 Int)) (let ((.cse2 (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1))) (or (= .cse2 (select (store (store .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)) (forall ((v_arrayElimCell_17 Int)) (= .cse2 (select (store (store (store .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| v_ArrVal_448) v_arrayElimCell_17 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)))))) (not (= (select .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24|) 0)))) (or (not .cse4) (forall ((v_antiDerIndex_entry0_1 Int) (|v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| Int)) (or (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store (store .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)) (not (= (select .cse3 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24|) 0)))) (not .cse0)) (or .cse1 .cse4)))) is different from false [2024-12-02 12:48:45,422 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (store |c_#valid| |c_ULTIMATE.start_expandArray_#t~mem2#1.base| 0))) (let ((.cse2 (= |c_ULTIMATE.start_expandArray_~pointer#1.base| |c_ULTIMATE.start_main_~#a~0#1.base|)) (.cse0 (= |c_ULTIMATE.start_main_~#a~0#1.offset| |c_ULTIMATE.start_expandArray_~pointer#1.offset|)) (.cse3 (forall ((v_arrayElimCell_17 Int) (v_antiDerIndex_entry0_1 Int) (|v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| Int) (v_ArrVal_448 Int)) (or (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store (store (store .cse1 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| v_ArrVal_448) v_arrayElimCell_17 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)) (not (= (select .cse1 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24|) 0)))))) (and (or (not .cse0) (forall ((v_antiDerIndex_entry0_1 Int) (|v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| Int)) (or (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store (store .cse1 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)) (not (= (select .cse1 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24|) 0)))) (not .cse2)) (or .cse2 .cse3) (or .cse0 .cse3) (forall ((|v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| Int)) (or (forall ((v_antiDerIndex_entry0_1 Int) (v_ArrVal_448 Int)) (let ((.cse4 (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1))) (or (= .cse4 (select (store (store .cse1 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)) (forall ((v_arrayElimCell_17 Int)) (= .cse4 (select (store (store (store .cse1 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24| v_ArrVal_448) v_arrayElimCell_17 0) |c_ULTIMATE.start_main_~#a~0#1.base| 0) v_antiDerIndex_entry0_1)))))) (not (= (select .cse1 |v_ULTIMATE.start_#Ultimate.C_realloc_#res#1.base_24|) 0))))))) is different from false [2024-12-02 12:48:46,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 12:48:46,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 205 treesize of output 177 [2024-12-02 12:48:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:46,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331910618] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:48:46,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:48:46,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 25 [2024-12-02 12:48:46,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814130287] [2024-12-02 12:48:46,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:48:46,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 12:48:46,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:46,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 12:48:46,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=439, Unknown=5, NotChecked=132, Total=650 [2024-12-02 12:48:46,486 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 26 states, 25 states have (on average 2.28) internal successors, (57), 26 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:47,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:47,215 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2024-12-02 12:48:47,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:48:47,215 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.28) internal successors, (57), 26 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-12-02 12:48:47,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:47,216 INFO L225 Difference]: With dead ends: 71 [2024-12-02 12:48:47,216 INFO L226 Difference]: Without dead ends: 64 [2024-12-02 12:48:47,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=111, Invalid=598, Unknown=5, NotChecked=156, Total=870 [2024-12-02 12:48:47,217 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:47,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 77 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 205 Invalid, 0 Unknown, 66 Unchecked, 0.4s Time] [2024-12-02 12:48:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-12-02 12:48:47,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-12-02 12:48:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:47,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2024-12-02 12:48:47,220 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 23 [2024-12-02 12:48:47,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:47,220 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2024-12-02 12:48:47,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.28) internal successors, (57), 26 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:47,220 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2024-12-02 12:48:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 12:48:47,221 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:47,221 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:47,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 12:48:47,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 12:48:47,422 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:47,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash -312747097, now seen corresponding path program 2 times [2024-12-02 12:48:47,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:47,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82400763] [2024-12-02 12:48:47,423 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:48:47,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:47,462 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:48:47,462 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:48:47,857 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:47,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82400763] [2024-12-02 12:48:47,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82400763] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904680510] [2024-12-02 12:48:47,857 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:48:47,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:47,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:47,859 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:47,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:48:48,033 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:48:48,033 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:48:48,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 12:48:48,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:48,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-12-02 12:48:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:48,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:48:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:48:48,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904680510] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:48:48,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:48:48,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-12-02 12:48:48,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366550352] [2024-12-02 12:48:48,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:48:48,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 12:48:48,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:48,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 12:48:48,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-12-02 12:48:48,646 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 25 states, 24 states have (on average 5.291666666666667) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:50,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:50,330 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2024-12-02 12:48:50,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-12-02 12:48:50,330 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.291666666666667) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-12-02 12:48:50,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:50,331 INFO L225 Difference]: With dead ends: 148 [2024-12-02 12:48:50,331 INFO L226 Difference]: Without dead ends: 148 [2024-12-02 12:48:50,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=876, Invalid=3414, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 12:48:50,334 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 87 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:50,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 154 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 12:48:50,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-12-02 12:48:50,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2024-12-02 12:48:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.006993006993007) internal successors, (144), 143 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2024-12-02 12:48:50,337 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 63 [2024-12-02 12:48:50,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:50,337 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2024-12-02 12:48:50,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.291666666666667) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:50,337 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2024-12-02 12:48:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 12:48:50,339 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:50,339 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:50,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 12:48:50,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:50,539 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-12-02 12:48:50,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:50,539 INFO L85 PathProgramCache]: Analyzing trace with hash -977795801, now seen corresponding path program 3 times [2024-12-02 12:48:50,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:50,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995675211] [2024-12-02 12:48:50,540 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:48:50,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:50,616 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 12:48:50,616 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:48:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 73 proven. 91 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-12-02 12:48:50,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:50,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995675211] [2024-12-02 12:48:50,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995675211] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:50,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403211318] [2024-12-02 12:48:50,884 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:48:50,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:50,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:50,886 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:50,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 12:48:51,081 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 12:48:51,081 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:48:51,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 12:48:51,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:51,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-12-02 12:48:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 73 proven. 91 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-12-02 12:48:51,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:48:52,451 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-12-02 12:48:52,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403211318] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:48:52,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:48:52,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2024-12-02 12:48:52,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12403666] [2024-12-02 12:48:52,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:48:52,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 12:48:52,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:52,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 12:48:52,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2024-12-02 12:48:52,453 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:52,838 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2024-12-02 12:48:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:48:52,838 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2024-12-02 12:48:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:52,839 INFO L225 Difference]: With dead ends: 143 [2024-12-02 12:48:52,839 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 12:48:52,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=1090, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 12:48:52,840 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 30 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:52,840 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 61 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:48:52,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 12:48:52,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 12:48:52,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 12:48:52,841 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2024-12-02 12:48:52,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:52,841 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 12:48:52,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:48:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 12:48:52,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 12:48:52,843 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2024-12-02 12:48:52,843 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-12-02 12:48:52,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-12-02 12:48:52,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-12-02 12:48:52,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2024-12-02 12:48:52,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2024-12-02 12:48:52,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-12-02 12:48:52,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2024-12-02 12:48:52,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-12-02 12:48:52,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-12-02 12:48:52,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (3 of 14 remaining) [2024-12-02 12:48:52,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (2 of 14 remaining) [2024-12-02 12:48:52,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (1 of 14 remaining) [2024-12-02 12:48:52,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (0 of 14 remaining) [2024-12-02 12:48:52,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 12:48:53,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:53,047 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:53,049 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 12:48:53,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:48:53 BoogieIcfgContainer [2024-12-02 12:48:53,051 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 12:48:53,051 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 12:48:53,051 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 12:48:53,051 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 12:48:53,052 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:18" (3/4) ... [2024-12-02 12:48:53,053 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 12:48:53,058 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-12-02 12:48:53,058 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-12-02 12:48:53,058 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-12-02 12:48:53,113 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 12:48:53,113 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 12:48:53,113 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 12:48:53,114 INFO L158 Benchmark]: Toolchain (without parser) took 35014.60ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 115.5MB in the beginning and 211.6MB in the end (delta: -96.0MB). Peak memory consumption was 69.5MB. Max. memory is 16.1GB. [2024-12-02 12:48:53,114 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:48:53,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.74ms. Allocated memory is still 142.6MB. Free memory was 115.3MB in the beginning and 98.8MB in the end (delta: 16.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:48:53,114 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.58ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 97.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:48:53,115 INFO L158 Benchmark]: Boogie Preprocessor took 36.55ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 95.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:48:53,115 INFO L158 Benchmark]: RCFGBuilder took 340.90ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 80.3MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 12:48:53,115 INFO L158 Benchmark]: TraceAbstraction took 34216.31ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 79.7MB in the beginning and 214.9MB in the end (delta: -135.1MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2024-12-02 12:48:53,115 INFO L158 Benchmark]: Witness Printer took 62.40ms. Allocated memory is still 310.4MB. Free memory was 214.9MB in the beginning and 211.6MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:48:53,116 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.74ms. Allocated memory is still 142.6MB. Free memory was 115.3MB in the beginning and 98.8MB in the end (delta: 16.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.58ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 97.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.55ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 95.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 340.90ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 80.3MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 34216.31ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 79.7MB in the beginning and 214.9MB in the end (delta: -135.1MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. * Witness Printer took 62.40ms. Allocated memory is still 310.4MB. Free memory was 214.9MB in the beginning and 211.6MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 581]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 581]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 581]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 570]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 34.2s, OverallIterations: 23, TraceHistogramMax: 14, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 768 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 768 mSDsluCounter, 1821 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 66 IncrementalHoareTripleChecker+Unchecked, 1315 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2715 IncrementalHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 506 mSDtfsCounter, 2715 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 926 GetRequests, 621 SyntacticMatches, 7 SemanticMatches, 298 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2127 ImplicationChecksByTransitivity, 21.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=22, InterpolantAutomatonStates: 225, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 122 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 25.4s InterpolantComputationTime, 854 NumberOfCodeBlocks, 614 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1166 ConstructedInterpolants, 48 QuantifiedInterpolants, 10691 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1814 ConjunctsInSsa, 172 ConjunctsInUnsatCore, 41 InterpolantComputations, 14 PerfectInterpolantSequences, 2314/3122 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 12:48:53,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3f159-b509-4ba2-be9b-5cebd4f03101/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE