./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrlcpy-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrlcpy-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX --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 a775ba6b744ab5ffb556747687a592ac2a696b9fe34bb3e21dc1471ba5c99e1a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:02:30,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:02:30,819 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:02:30,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:02:30,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:02:30,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:02:30,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:02:30,874 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:02:30,875 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:02:30,878 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:02:30,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:02:30,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:02:30,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:02:30,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:02:30,885 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:02:30,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:02:30,886 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:02:30,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:02:30,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:02:30,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:02:30,888 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:02:30,890 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:02:30,890 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:02:30,891 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:02:30,891 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:02:30,892 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:02:30,892 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:02:30,893 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:02:30,893 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:02:30,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:02:30,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:02:30,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:02:30,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:02:30,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:02:30,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:02:30,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:02:30,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:02:30,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:02:30,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:02:30,900 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:02:30,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:02:30,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:02:30,901 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a775ba6b744ab5ffb556747687a592ac2a696b9fe34bb3e21dc1471ba5c99e1a [2024-11-08 17:02:31,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:02:31,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:02:31,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:02:31,280 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:02:31,281 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:02:31,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-memsafety/openbsd_cstrlcpy-alloca-1.i Unable to find full path for "g++" [2024-11-08 17:02:33,589 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:02:33,880 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:02:33,885 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/sv-benchmarks/c/array-memsafety/openbsd_cstrlcpy-alloca-1.i [2024-11-08 17:02:33,904 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/data/b802b48fe/0ee59b2b1d174122bae0b6827ceda20c/FLAG13e6dbde4 [2024-11-08 17:02:33,929 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/data/b802b48fe/0ee59b2b1d174122bae0b6827ceda20c [2024-11-08 17:02:33,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:02:33,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:02:33,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:02:33,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:02:33,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:02:33,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:02:33" (1/1) ... [2024-11-08 17:02:33,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164d5906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:33, skipping insertion in model container [2024-11-08 17:02:33,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:02:33" (1/1) ... [2024-11-08 17:02:34,003 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:02:34,480 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:02:34,481 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:02:34,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:02:34,500 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:02:34,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:02:34,596 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:02:34,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34 WrapperNode [2024-11-08 17:02:34,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:02:34,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:02:34,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:02:34,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:02:34,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34" (1/1) ... [2024-11-08 17:02:34,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34" (1/1) ... [2024-11-08 17:02:34,651 INFO L138 Inliner]: procedures = 117, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 101 [2024-11-08 17:02:34,652 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:02:34,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:02:34,653 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:02:34,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:02:34,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34" (1/1) ... [2024-11-08 17:02:34,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34" (1/1) ... [2024-11-08 17:02:34,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34" (1/1) ... [2024-11-08 17:02:34,690 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [4, 4]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 6 writes are split as follows [2, 4]. [2024-11-08 17:02:34,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34" (1/1) ... [2024-11-08 17:02:34,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34" (1/1) ... [2024-11-08 17:02:34,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34" (1/1) ... [2024-11-08 17:02:34,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34" (1/1) ... [2024-11-08 17:02:34,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34" (1/1) ... [2024-11-08 17:02:34,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34" (1/1) ... [2024-11-08 17:02:34,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:02:34,721 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:02:34,722 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:02:34,722 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:02:34,723 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34" (1/1) ... [2024-11-08 17:02:34,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:02:34,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:02:34,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:02:34,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:02:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:02:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:02:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:02:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:02:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 17:02:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 17:02:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:02:34,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:02:35,027 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:02:35,029 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:02:35,426 INFO L? ?]: Removed 69 outVars from TransFormulas that were not future-live. [2024-11-08 17:02:35,426 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:02:35,451 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:02:35,451 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 17:02:35,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:02:35 BoogieIcfgContainer [2024-11-08 17:02:35,452 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:02:35,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:02:35,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:02:35,461 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:02:35,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:02:33" (1/3) ... [2024-11-08 17:02:35,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664b7737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:02:35, skipping insertion in model container [2024-11-08 17:02:35,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:02:34" (2/3) ... [2024-11-08 17:02:35,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664b7737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:02:35, skipping insertion in model container [2024-11-08 17:02:35,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:02:35" (3/3) ... [2024-11-08 17:02:35,469 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrlcpy-alloca-1.i [2024-11-08 17:02:35,497 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:02:35,497 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-08 17:02:35,579 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:02:35,590 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;@78f2b015, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:02:35,590 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-08 17:02:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 34 states have (on average 1.911764705882353) internal successors, (65), 51 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) [2024-11-08 17:02:35,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 17:02:35,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:35,606 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:35,608 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:35,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:35,617 INFO L85 PathProgramCache]: Analyzing trace with hash 121323279, now seen corresponding path program 1 times [2024-11-08 17:02:35,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:35,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446234408] [2024-11-08 17:02:35,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:35,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:35,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:35,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446234408] [2024-11-08 17:02:35,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446234408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:35,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:36,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:02:36,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119415653] [2024-11-08 17:02:36,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:36,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:02:36,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:36,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:02:36,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:02:36,046 INFO L87 Difference]: Start difference. First operand has 52 states, 34 states have (on average 1.911764705882353) internal successors, (65), 51 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:36,116 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2024-11-08 17:02:36,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:02:36,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-08 17:02:36,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:36,129 INFO L225 Difference]: With dead ends: 68 [2024-11-08 17:02:36,130 INFO L226 Difference]: Without dead ends: 66 [2024-11-08 17:02:36,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:02:36,138 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 16 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:36,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 126 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:02:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-08 17:02:36,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2024-11-08 17:02:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 52 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) [2024-11-08 17:02:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2024-11-08 17:02:36,191 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 8 [2024-11-08 17:02:36,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:36,193 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2024-11-08 17:02:36,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:36,194 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2024-11-08 17:02:36,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 17:02:36,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:36,195 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:36,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:02:36,196 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:36,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:36,197 INFO L85 PathProgramCache]: Analyzing trace with hash 178581581, now seen corresponding path program 1 times [2024-11-08 17:02:36,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:36,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36445828] [2024-11-08 17:02:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:36,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:36,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:36,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:36,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36445828] [2024-11-08 17:02:36,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36445828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:36,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:36,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:02:36,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964090336] [2024-11-08 17:02:36,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:36,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:02:36,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:36,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:02:36,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:02:36,435 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:36,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:36,521 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2024-11-08 17:02:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:02:36,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-08 17:02:36,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:36,524 INFO L225 Difference]: With dead ends: 51 [2024-11-08 17:02:36,526 INFO L226 Difference]: Without dead ends: 51 [2024-11-08 17:02:36,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:02:36,530 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 18 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:36,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:36,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-08 17:02:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-08 17:02:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.75) internal successors, (63), 50 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-08 17:02:36,542 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 8 [2024-11-08 17:02:36,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:36,543 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-08 17:02:36,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:36,543 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-08 17:02:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 17:02:36,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:36,545 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:36,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:02:36,546 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:36,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:36,548 INFO L85 PathProgramCache]: Analyzing trace with hash 178581582, now seen corresponding path program 1 times [2024-11-08 17:02:36,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:36,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050614521] [2024-11-08 17:02:36,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:36,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:37,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:37,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050614521] [2024-11-08 17:02:37,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050614521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:37,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:37,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:02:37,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787758703] [2024-11-08 17:02:37,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:37,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:02:37,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:37,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:02:37,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:02:37,035 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:37,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:37,233 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2024-11-08 17:02:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:02:37,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-08 17:02:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:37,237 INFO L225 Difference]: With dead ends: 55 [2024-11-08 17:02:37,240 INFO L226 Difference]: Without dead ends: 55 [2024-11-08 17:02:37,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:02:37,242 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 25 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:37,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 175 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:02:37,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-08 17:02:37,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-11-08 17:02:37,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 53 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) [2024-11-08 17:02:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2024-11-08 17:02:37,260 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 8 [2024-11-08 17:02:37,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:37,260 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2024-11-08 17:02:37,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2024-11-08 17:02:37,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 17:02:37,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:37,264 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:37,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:02:37,264 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:37,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:37,265 INFO L85 PathProgramCache]: Analyzing trace with hash 637962110, now seen corresponding path program 1 times [2024-11-08 17:02:37,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:37,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303091457] [2024-11-08 17:02:37,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:37,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:37,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:37,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303091457] [2024-11-08 17:02:37,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303091457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:37,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:37,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:02:37,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141909498] [2024-11-08 17:02:37,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:37,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:02:37,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:37,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:02:37,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:02:37,386 INFO L87 Difference]: Start difference. First operand 54 states and 67 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) [2024-11-08 17:02:37,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:37,446 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2024-11-08 17:02:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:02:37,447 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 [2024-11-08 17:02:37,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:37,448 INFO L225 Difference]: With dead ends: 73 [2024-11-08 17:02:37,448 INFO L226 Difference]: Without dead ends: 73 [2024-11-08 17:02:37,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:02:37,449 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 12 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:37,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 145 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:37,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-08 17:02:37,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2024-11-08 17:02:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 51 states have (on average 1.6274509803921569) internal successors, (83), 65 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2024-11-08 17:02:37,457 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 10 [2024-11-08 17:02:37,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:37,457 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2024-11-08 17:02:37,458 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) [2024-11-08 17:02:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2024-11-08 17:02:37,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 17:02:37,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:37,459 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:37,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:02:37,459 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:37,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:37,460 INFO L85 PathProgramCache]: Analyzing trace with hash 637972937, now seen corresponding path program 1 times [2024-11-08 17:02:37,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:37,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501294976] [2024-11-08 17:02:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:37,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:37,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:37,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501294976] [2024-11-08 17:02:37,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501294976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:37,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:37,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:02:37,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930926073] [2024-11-08 17:02:37,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:37,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:02:37,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:37,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:02:37,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:02:37,592 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2024-11-08 17:02:37,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:37,649 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2024-11-08 17:02:37,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:02:37,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 [2024-11-08 17:02:37,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:37,650 INFO L225 Difference]: With dead ends: 64 [2024-11-08 17:02:37,650 INFO L226 Difference]: Without dead ends: 64 [2024-11-08 17:02:37,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:02:37,652 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 14 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 73 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 [2024-11-08 17:02:37,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 73 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:02:37,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-08 17:02:37,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-08 17:02:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.588235294117647) internal successors, (81), 63 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:37,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2024-11-08 17:02:37,665 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 10 [2024-11-08 17:02:37,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:37,665 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2024-11-08 17:02:37,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2024-11-08 17:02:37,666 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2024-11-08 17:02:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 17:02:37,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:37,667 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:37,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:02:37,668 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:37,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:37,668 INFO L85 PathProgramCache]: Analyzing trace with hash 637972938, now seen corresponding path program 1 times [2024-11-08 17:02:37,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:37,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291940571] [2024-11-08 17:02:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:37,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:37,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:37,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291940571] [2024-11-08 17:02:37,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291940571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:37,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:37,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:02:37,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376726800] [2024-11-08 17:02:37,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:37,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:02:37,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:37,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:02:37,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:02:37,916 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) 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) [2024-11-08 17:02:38,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:38,011 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2024-11-08 17:02:38,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:02:38,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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 [2024-11-08 17:02:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:38,013 INFO L225 Difference]: With dead ends: 70 [2024-11-08 17:02:38,013 INFO L226 Difference]: Without dead ends: 70 [2024-11-08 17:02:38,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:02:38,014 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 9 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:38,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 127 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-08 17:02:38,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2024-11-08 17:02:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.5660377358490567) internal successors, (83), 65 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2024-11-08 17:02:38,020 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 10 [2024-11-08 17:02:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:38,020 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2024-11-08 17:02:38,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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) [2024-11-08 17:02:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2024-11-08 17:02:38,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 17:02:38,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:38,021 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:38,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:02:38,022 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:38,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:38,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1881997823, now seen corresponding path program 1 times [2024-11-08 17:02:38,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:38,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224732803] [2024-11-08 17:02:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:38,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:38,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:38,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224732803] [2024-11-08 17:02:38,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224732803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:38,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:38,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:02:38,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273126561] [2024-11-08 17:02:38,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:38,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:02:38,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:38,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:02:38,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:02:38,367 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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) [2024-11-08 17:02:38,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:38,492 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2024-11-08 17:02:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:02:38,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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 [2024-11-08 17:02:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:38,493 INFO L225 Difference]: With dead ends: 70 [2024-11-08 17:02:38,494 INFO L226 Difference]: Without dead ends: 70 [2024-11-08 17:02:38,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:02:38,495 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 27 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:38,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 128 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:38,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-08 17:02:38,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2024-11-08 17:02:38,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 68 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2024-11-08 17:02:38,501 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 10 [2024-11-08 17:02:38,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:38,502 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2024-11-08 17:02:38,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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) [2024-11-08 17:02:38,502 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2024-11-08 17:02:38,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 17:02:38,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:38,503 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:38,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:02:38,504 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:38,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:38,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1881986996, now seen corresponding path program 1 times [2024-11-08 17:02:38,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:38,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305542365] [2024-11-08 17:02:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:38,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:38,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:38,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305542365] [2024-11-08 17:02:38,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305542365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:38,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:38,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:02:38,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714474662] [2024-11-08 17:02:38,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:38,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:02:38,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:38,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:02:38,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:02:38,876 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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) [2024-11-08 17:02:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:38,989 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2024-11-08 17:02:38,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:02:38,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 [2024-11-08 17:02:38,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:38,990 INFO L225 Difference]: With dead ends: 75 [2024-11-08 17:02:38,990 INFO L226 Difference]: Without dead ends: 75 [2024-11-08 17:02:38,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:02:38,991 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:38,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 104 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:38,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-08 17:02:39,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2024-11-08 17:02:39,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 68 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:39,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2024-11-08 17:02:39,004 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 10 [2024-11-08 17:02:39,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:39,004 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2024-11-08 17:02:39,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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) [2024-11-08 17:02:39,004 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2024-11-08 17:02:39,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 17:02:39,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:39,005 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:39,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:02:39,009 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:39,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:39,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1697675409, now seen corresponding path program 1 times [2024-11-08 17:02:39,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:39,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169790397] [2024-11-08 17:02:39,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:39,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:39,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:39,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169790397] [2024-11-08 17:02:39,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169790397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:39,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:39,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:02:39,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776267852] [2024-11-08 17:02:39,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:39,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:02:39,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:39,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:02:39,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:02:39,186 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:39,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:39,226 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2024-11-08 17:02:39,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:02:39,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 17:02:39,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:39,230 INFO L225 Difference]: With dead ends: 86 [2024-11-08 17:02:39,230 INFO L226 Difference]: Without dead ends: 86 [2024-11-08 17:02:39,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:02:39,231 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 15 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:39,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 99 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:02:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-08 17:02:39,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2024-11-08 17:02:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 83 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2024-11-08 17:02:39,240 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 11 [2024-11-08 17:02:39,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:39,240 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2024-11-08 17:02:39,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:39,241 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2024-11-08 17:02:39,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 17:02:39,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:39,241 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:39,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:02:39,242 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:39,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:39,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1017617039, now seen corresponding path program 1 times [2024-11-08 17:02:39,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:39,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469415176] [2024-11-08 17:02:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:39,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:39,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:39,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:39,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469415176] [2024-11-08 17:02:39,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469415176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:39,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:39,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:02:39,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977919685] [2024-11-08 17:02:39,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:39,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:02:39,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:39,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:02:39,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:02:39,488 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:39,578 INFO L93 Difference]: Finished difference Result 103 states and 129 transitions. [2024-11-08 17:02:39,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:02:39,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 17:02:39,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:39,580 INFO L225 Difference]: With dead ends: 103 [2024-11-08 17:02:39,580 INFO L226 Difference]: Without dead ends: 103 [2024-11-08 17:02:39,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:02:39,581 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 47 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:39,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 83 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:39,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-08 17:02:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 84. [2024-11-08 17:02:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 83 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:39,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2024-11-08 17:02:39,594 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 11 [2024-11-08 17:02:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:39,594 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2024-11-08 17:02:39,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:39,594 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2024-11-08 17:02:39,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 17:02:39,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:39,595 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:39,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:02:39,599 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:39,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:39,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1390997254, now seen corresponding path program 1 times [2024-11-08 17:02:39,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:39,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971781991] [2024-11-08 17:02:39,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:39,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:39,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:39,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971781991] [2024-11-08 17:02:39,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971781991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:39,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002533491] [2024-11-08 17:02:39,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:39,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:39,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:02:39,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:02:39,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:02:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:40,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:02:40,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:02:40,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-08 17:02:40,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:02:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:40,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:02:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:41,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002533491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:02:41,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:02:41,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-08 17:02:41,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517193532] [2024-11-08 17:02:41,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:02:41,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 17:02:41,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:41,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 17:02:41,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:02:41,019 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 17 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) [2024-11-08 17:02:41,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:41,308 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2024-11-08 17:02:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:02:41,309 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 17 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) Word has length 12 [2024-11-08 17:02:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:41,310 INFO L225 Difference]: With dead ends: 87 [2024-11-08 17:02:41,310 INFO L226 Difference]: Without dead ends: 87 [2024-11-08 17:02:41,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:02:41,311 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 51 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:41,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 136 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-08 17:02:41,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2024-11-08 17:02:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 78 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2024-11-08 17:02:41,324 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 12 [2024-11-08 17:02:41,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:41,324 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2024-11-08 17:02:41,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 17 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) [2024-11-08 17:02:41,325 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2024-11-08 17:02:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 17:02:41,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:41,325 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:41,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:02:41,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 17:02:41,526 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:41,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:41,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1378543481, now seen corresponding path program 1 times [2024-11-08 17:02:41,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:41,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167361123] [2024-11-08 17:02:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:41,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:41,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:41,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167361123] [2024-11-08 17:02:41,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167361123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:41,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906355221] [2024-11-08 17:02:41,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:41,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:41,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:02:41,971 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:02:41,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:02:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:42,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 17:02:42,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:02:42,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:02:42,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-08 17:02:42,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-08 17:02:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:42,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:02:42,843 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:02:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:42,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906355221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:02:42,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:02:42,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2024-11-08 17:02:42,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921335405] [2024-11-08 17:02:42,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:02:42,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 17:02:42,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:42,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 17:02:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:02:42,870 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:43,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:43,196 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2024-11-08 17:02:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:02:43,197 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2024-11-08 17:02:43,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:43,198 INFO L225 Difference]: With dead ends: 82 [2024-11-08 17:02:43,198 INFO L226 Difference]: Without dead ends: 82 [2024-11-08 17:02:43,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2024-11-08 17:02:43,199 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 40 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:43,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 231 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:02:43,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-08 17:02:43,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2024-11-08 17:02:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 63 states have (on average 1.4444444444444444) internal successors, (91), 73 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2024-11-08 17:02:43,203 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 14 [2024-11-08 17:02:43,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:43,203 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2024-11-08 17:02:43,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:43,204 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2024-11-08 17:02:43,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 17:02:43,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:43,204 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:43,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:02:43,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:43,405 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:43,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:43,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1378554308, now seen corresponding path program 1 times [2024-11-08 17:02:43,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:43,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117253250] [2024-11-08 17:02:43,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:43,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:43,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:43,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117253250] [2024-11-08 17:02:43,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117253250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:43,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755315037] [2024-11-08 17:02:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:43,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:43,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:02:43,756 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:02:43,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:02:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:43,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 17:02:43,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:02:43,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:02:43,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-08 17:02:43,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-08 17:02:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:44,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:02:44,279 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:02:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:44,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755315037] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:44,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:02:44,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 14 [2024-11-08 17:02:44,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157495272] [2024-11-08 17:02:44,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:44,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:02:44,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:44,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:02:44,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:02:44,324 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2024-11-08 17:02:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:44,495 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2024-11-08 17:02:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:02:44,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 [2024-11-08 17:02:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:44,496 INFO L225 Difference]: With dead ends: 73 [2024-11-08 17:02:44,497 INFO L226 Difference]: Without dead ends: 73 [2024-11-08 17:02:44,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2024-11-08 17:02:44,498 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 27 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:44,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 153 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:44,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-08 17:02:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2024-11-08 17:02:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2024-11-08 17:02:44,502 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 14 [2024-11-08 17:02:44,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:44,503 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2024-11-08 17:02:44,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2024-11-08 17:02:44,503 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2024-11-08 17:02:44,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 17:02:44,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:44,504 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:44,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:02:44,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:44,706 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:44,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1677675449, now seen corresponding path program 1 times [2024-11-08 17:02:44,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:44,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021480683] [2024-11-08 17:02:44,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:44,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:45,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:45,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021480683] [2024-11-08 17:02:45,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021480683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:45,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:45,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:02:45,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647493841] [2024-11-08 17:02:45,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:45,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:02:45,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:45,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:02:45,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:02:45,056 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:45,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:45,142 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2024-11-08 17:02:45,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:02:45,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-08 17:02:45,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:45,144 INFO L225 Difference]: With dead ends: 66 [2024-11-08 17:02:45,144 INFO L226 Difference]: Without dead ends: 66 [2024-11-08 17:02:45,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:02:45,145 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:45,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 121 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-08 17:02:45,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2024-11-08 17:02:45,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 53 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) [2024-11-08 17:02:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-11-08 17:02:45,149 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 15 [2024-11-08 17:02:45,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:45,150 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-11-08 17:02:45,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-11-08 17:02:45,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 17:02:45,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:45,153 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:45,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:02:45,154 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:45,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:45,154 INFO L85 PathProgramCache]: Analyzing trace with hash -368460335, now seen corresponding path program 1 times [2024-11-08 17:02:45,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:45,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259535810] [2024-11-08 17:02:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:45,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:45,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:45,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259535810] [2024-11-08 17:02:45,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259535810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:45,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:45,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:02:45,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61349755] [2024-11-08 17:02:45,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:45,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:02:45,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:45,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:02:45,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:02:45,233 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:45,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:45,292 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2024-11-08 17:02:45,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:02:45,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-08 17:02:45,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:45,294 INFO L225 Difference]: With dead ends: 60 [2024-11-08 17:02:45,294 INFO L226 Difference]: Without dead ends: 60 [2024-11-08 17:02:45,296 INFO L431 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 [2024-11-08 17:02:45,297 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:45,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 75 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:45,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-08 17:02:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2024-11-08 17:02:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 52 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) [2024-11-08 17:02:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-11-08 17:02:45,302 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 16 [2024-11-08 17:02:45,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:45,302 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-11-08 17:02:45,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:45,303 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-11-08 17:02:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 17:02:45,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:45,304 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:45,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 17:02:45,304 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:45,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash -368460334, now seen corresponding path program 1 times [2024-11-08 17:02:45,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:45,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955483403] [2024-11-08 17:02:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:45,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:45,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:45,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955483403] [2024-11-08 17:02:45,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955483403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:45,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:45,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:02:45,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910917424] [2024-11-08 17:02:45,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:45,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:02:45,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:02:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:02:45,397 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:45,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:45,436 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2024-11-08 17:02:45,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:02:45,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-08 17:02:45,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:45,438 INFO L225 Difference]: With dead ends: 59 [2024-11-08 17:02:45,438 INFO L226 Difference]: Without dead ends: 59 [2024-11-08 17:02:45,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:02:45,439 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 5 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:45,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 123 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:02:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-08 17:02:45,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-11-08 17:02:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.38) internal successors, (69), 57 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) [2024-11-08 17:02:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2024-11-08 17:02:45,443 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 16 [2024-11-08 17:02:45,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:45,443 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2024-11-08 17:02:45,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:45,444 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2024-11-08 17:02:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 17:02:45,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:45,445 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:45,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 17:02:45,445 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:45,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:45,446 INFO L85 PathProgramCache]: Analyzing trace with hash -369229871, now seen corresponding path program 1 times [2024-11-08 17:02:45,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:45,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046084152] [2024-11-08 17:02:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:45,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:45,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:45,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046084152] [2024-11-08 17:02:45,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046084152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:45,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:45,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:02:45,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566801355] [2024-11-08 17:02:45,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:45,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:02:45,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:45,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:02:45,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:02:45,542 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:45,636 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2024-11-08 17:02:45,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:02:45,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-08 17:02:45,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:45,640 INFO L225 Difference]: With dead ends: 57 [2024-11-08 17:02:45,641 INFO L226 Difference]: Without dead ends: 57 [2024-11-08 17:02:45,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:02:45,642 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:45,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 96 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:45,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-08 17:02:45,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-08 17:02:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 50 states have (on average 1.36) internal successors, (68), 56 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2024-11-08 17:02:45,648 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 16 [2024-11-08 17:02:45,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:45,649 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2024-11-08 17:02:45,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:45,649 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2024-11-08 17:02:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 17:02:45,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:45,650 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:45,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 17:02:45,651 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:45,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:45,651 INFO L85 PathProgramCache]: Analyzing trace with hash -369229870, now seen corresponding path program 1 times [2024-11-08 17:02:45,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:45,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071919675] [2024-11-08 17:02:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:45,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:45,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:45,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071919675] [2024-11-08 17:02:45,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071919675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:45,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:45,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:02:45,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273605480] [2024-11-08 17:02:45,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:45,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:02:45,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:45,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:02:45,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:02:45,947 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:46,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:46,095 INFO L93 Difference]: Finished difference Result 85 states and 102 transitions. [2024-11-08 17:02:46,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:02:46,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-08 17:02:46,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:46,096 INFO L225 Difference]: With dead ends: 85 [2024-11-08 17:02:46,096 INFO L226 Difference]: Without dead ends: 85 [2024-11-08 17:02:46,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:02:46,097 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 37 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:46,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 157 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:46,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-08 17:02:46,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2024-11-08 17:02:46,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 59 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:46,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-11-08 17:02:46,103 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 16 [2024-11-08 17:02:46,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:46,104 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-11-08 17:02:46,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:46,104 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-11-08 17:02:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 17:02:46,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:46,105 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:46,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 17:02:46,105 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:46,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:46,106 INFO L85 PathProgramCache]: Analyzing trace with hash -955266348, now seen corresponding path program 1 times [2024-11-08 17:02:46,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:46,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315595988] [2024-11-08 17:02:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:46,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:46,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:46,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315595988] [2024-11-08 17:02:46,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315595988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:46,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:46,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:02:46,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031032346] [2024-11-08 17:02:46,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:46,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:02:46,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:46,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:02:46,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:02:46,231 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:46,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:46,272 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2024-11-08 17:02:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:02:46,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-08 17:02:46,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:46,273 INFO L225 Difference]: With dead ends: 60 [2024-11-08 17:02:46,274 INFO L226 Difference]: Without dead ends: 60 [2024-11-08 17:02:46,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:02:46,275 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:46,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 125 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:02:46,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-08 17:02:46,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2024-11-08 17:02:46,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 48 states have (on average 1.375) internal successors, (66), 54 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) [2024-11-08 17:02:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2024-11-08 17:02:46,279 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 16 [2024-11-08 17:02:46,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:46,280 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2024-11-08 17:02:46,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:46,280 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2024-11-08 17:02:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 17:02:46,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:46,281 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:46,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 17:02:46,282 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:46,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:46,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1438775929, now seen corresponding path program 1 times [2024-11-08 17:02:46,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:46,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237485637] [2024-11-08 17:02:46,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:46,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:46,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:46,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237485637] [2024-11-08 17:02:46,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237485637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:46,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:46,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:02:46,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115648754] [2024-11-08 17:02:46,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:46,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:02:46,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:46,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:02:46,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:02:46,385 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:46,468 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2024-11-08 17:02:46,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:02:46,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-08 17:02:46,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:46,470 INFO L225 Difference]: With dead ends: 61 [2024-11-08 17:02:46,470 INFO L226 Difference]: Without dead ends: 61 [2024-11-08 17:02:46,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:02:46,471 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 31 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:46,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 97 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-08 17:02:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2024-11-08 17:02:46,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 53 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) [2024-11-08 17:02:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-11-08 17:02:46,475 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 17 [2024-11-08 17:02:46,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:46,475 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-11-08 17:02:46,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:46,476 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-11-08 17:02:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 17:02:46,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:46,479 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:46,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 17:02:46,479 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:46,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1438775930, now seen corresponding path program 1 times [2024-11-08 17:02:46,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:46,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323730425] [2024-11-08 17:02:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:46,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:46,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:46,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323730425] [2024-11-08 17:02:46,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323730425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:46,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:46,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:02:46,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697802783] [2024-11-08 17:02:46,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:46,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:02:46,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:46,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:02:46,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:02:46,695 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:46,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:46,827 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2024-11-08 17:02:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:02:46,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-08 17:02:46,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:46,828 INFO L225 Difference]: With dead ends: 70 [2024-11-08 17:02:46,828 INFO L226 Difference]: Without dead ends: 70 [2024-11-08 17:02:46,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:02:46,829 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 37 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:46,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 138 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:46,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-08 17:02:46,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2024-11-08 17:02:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 57 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) [2024-11-08 17:02:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2024-11-08 17:02:46,833 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 17 [2024-11-08 17:02:46,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:46,833 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2024-11-08 17:02:46,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2024-11-08 17:02:46,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 17:02:46,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:46,834 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:46,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 17:02:46,835 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:46,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash -316293673, now seen corresponding path program 1 times [2024-11-08 17:02:46,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:46,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204511054] [2024-11-08 17:02:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:46,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:47,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:47,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204511054] [2024-11-08 17:02:47,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204511054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:47,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:47,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:02:47,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967850361] [2024-11-08 17:02:47,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:47,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:02:47,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:47,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:02:47,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:02:47,026 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:47,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:47,067 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2024-11-08 17:02:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:02:47,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-08 17:02:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:47,069 INFO L225 Difference]: With dead ends: 57 [2024-11-08 17:02:47,071 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 17:02:47,071 INFO L431 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 [2024-11-08 17:02:47,072 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 28 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:47,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 68 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:02:47,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 17:02:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-08 17:02:47,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 53 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) [2024-11-08 17:02:47,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-11-08 17:02:47,098 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 19 [2024-11-08 17:02:47,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:47,099 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-11-08 17:02:47,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:47,099 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-11-08 17:02:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 17:02:47,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:47,100 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:47,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 17:02:47,100 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:47,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:47,102 INFO L85 PathProgramCache]: Analyzing trace with hash -317057251, now seen corresponding path program 1 times [2024-11-08 17:02:47,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:47,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996370297] [2024-11-08 17:02:47,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:47,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:47,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:47,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996370297] [2024-11-08 17:02:47,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996370297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:47,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:47,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:02:47,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815223760] [2024-11-08 17:02:47,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:47,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:02:47,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:47,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:02:47,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:02:47,190 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:47,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:47,249 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2024-11-08 17:02:47,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:02:47,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-08 17:02:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:47,250 INFO L225 Difference]: With dead ends: 53 [2024-11-08 17:02:47,251 INFO L226 Difference]: Without dead ends: 53 [2024-11-08 17:02:47,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:02:47,252 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 25 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:47,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 84 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:02:47,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-08 17:02:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-08 17:02:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 52 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) [2024-11-08 17:02:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-11-08 17:02:47,255 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 19 [2024-11-08 17:02:47,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:47,255 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-11-08 17:02:47,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:47,256 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-11-08 17:02:47,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 17:02:47,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:47,256 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:47,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 17:02:47,257 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:47,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:47,258 INFO L85 PathProgramCache]: Analyzing trace with hash -317057250, now seen corresponding path program 1 times [2024-11-08 17:02:47,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:47,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639032771] [2024-11-08 17:02:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:47,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:47,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:47,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639032771] [2024-11-08 17:02:47,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639032771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:47,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:47,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:02:47,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611058795] [2024-11-08 17:02:47,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:47,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:02:47,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:47,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:02:47,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:02:47,384 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:47,431 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2024-11-08 17:02:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:02:47,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-08 17:02:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:47,432 INFO L225 Difference]: With dead ends: 73 [2024-11-08 17:02:47,432 INFO L226 Difference]: Without dead ends: 73 [2024-11-08 17:02:47,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:02:47,433 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:47,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 130 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:02:47,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-08 17:02:47,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-11-08 17:02:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.2985074626865671) internal successors, (87), 70 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:47,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2024-11-08 17:02:47,437 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 19 [2024-11-08 17:02:47,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:47,438 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2024-11-08 17:02:47,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:47,438 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2024-11-08 17:02:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 17:02:47,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:47,439 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:47,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-08 17:02:47,439 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:47,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:47,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1338125604, now seen corresponding path program 1 times [2024-11-08 17:02:47,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:47,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224192888] [2024-11-08 17:02:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:47,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:47,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:47,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224192888] [2024-11-08 17:02:47,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224192888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:47,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:47,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:02:47,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887080834] [2024-11-08 17:02:47,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:47,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:02:47,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:47,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:02:47,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:02:47,594 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:47,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:47,640 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2024-11-08 17:02:47,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:02:47,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-08 17:02:47,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:47,642 INFO L225 Difference]: With dead ends: 71 [2024-11-08 17:02:47,642 INFO L226 Difference]: Without dead ends: 71 [2024-11-08 17:02:47,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:02:47,643 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 25 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:47,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 95 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:02:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-08 17:02:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2024-11-08 17:02:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 52 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2024-11-08 17:02:47,647 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 19 [2024-11-08 17:02:47,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:47,647 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2024-11-08 17:02:47,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:47,647 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2024-11-08 17:02:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 17:02:47,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:47,648 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:47,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 17:02:47,648 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:47,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:47,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1238996791, now seen corresponding path program 1 times [2024-11-08 17:02:47,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:47,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805934420] [2024-11-08 17:02:47,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:47,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:47,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:47,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805934420] [2024-11-08 17:02:47,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805934420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:47,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:47,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:02:47,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766791770] [2024-11-08 17:02:47,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:47,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:02:47,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:47,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:02:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:02:47,884 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:48,019 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-11-08 17:02:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:02:48,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-08 17:02:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:48,020 INFO L225 Difference]: With dead ends: 71 [2024-11-08 17:02:48,020 INFO L226 Difference]: Without dead ends: 71 [2024-11-08 17:02:48,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:02:48,021 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 21 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:48,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 138 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-08 17:02:48,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2024-11-08 17:02:48,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 54 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) [2024-11-08 17:02:48,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-11-08 17:02:48,025 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 20 [2024-11-08 17:02:48,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:48,025 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-11-08 17:02:48,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:48,025 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-11-08 17:02:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 17:02:48,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:48,026 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:48,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-08 17:02:48,027 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:48,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:48,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1458853062, now seen corresponding path program 1 times [2024-11-08 17:02:48,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:48,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887920831] [2024-11-08 17:02:48,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:48,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:48,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:48,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:48,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887920831] [2024-11-08 17:02:48,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887920831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:48,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:48,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:02:48,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482666308] [2024-11-08 17:02:48,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:48,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:02:48,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:48,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:02:48,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:02:48,181 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:48,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:48,227 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2024-11-08 17:02:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:02:48,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 [2024-11-08 17:02:48,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:48,229 INFO L225 Difference]: With dead ends: 62 [2024-11-08 17:02:48,229 INFO L226 Difference]: Without dead ends: 62 [2024-11-08 17:02:48,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:02:48,231 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:48,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 125 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:02:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-08 17:02:48,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-08 17:02:48,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 61 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) [2024-11-08 17:02:48,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2024-11-08 17:02:48,236 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 21 [2024-11-08 17:02:48,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:48,237 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2024-11-08 17:02:48,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:48,237 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2024-11-08 17:02:48,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 17:02:48,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:48,239 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:48,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-08 17:02:48,240 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:48,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:48,240 INFO L85 PathProgramCache]: Analyzing trace with hash -535291644, now seen corresponding path program 1 times [2024-11-08 17:02:48,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:48,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303667531] [2024-11-08 17:02:48,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:48,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:48,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:48,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303667531] [2024-11-08 17:02:48,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303667531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:48,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:48,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:02:48,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973863094] [2024-11-08 17:02:48,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:48,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:02:48,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:48,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:02:48,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:02:48,432 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:48,524 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2024-11-08 17:02:48,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:02:48,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 [2024-11-08 17:02:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:48,526 INFO L225 Difference]: With dead ends: 73 [2024-11-08 17:02:48,526 INFO L226 Difference]: Without dead ends: 73 [2024-11-08 17:02:48,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:02:48,527 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 30 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:48,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 117 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:48,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-08 17:02:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2024-11-08 17:02:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:48,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2024-11-08 17:02:48,531 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 21 [2024-11-08 17:02:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:48,532 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2024-11-08 17:02:48,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:48,532 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2024-11-08 17:02:48,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 17:02:48,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:48,533 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:48,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-08 17:02:48,534 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:48,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:48,534 INFO L85 PathProgramCache]: Analyzing trace with hash -4411448, now seen corresponding path program 1 times [2024-11-08 17:02:48,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:48,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009102957] [2024-11-08 17:02:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:48,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:48,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:48,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009102957] [2024-11-08 17:02:48,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009102957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:48,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:48,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:02:48,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228174146] [2024-11-08 17:02:48,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:48,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:02:48,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:48,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:02:48,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:02:48,808 INFO L87 Difference]: Start difference. First operand 63 states and 73 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) [2024-11-08 17:02:48,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:48,874 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2024-11-08 17:02:48,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:02:48,875 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 [2024-11-08 17:02:48,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:48,875 INFO L225 Difference]: With dead ends: 91 [2024-11-08 17:02:48,876 INFO L226 Difference]: Without dead ends: 74 [2024-11-08 17:02:48,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:02:48,881 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 9 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:48,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 185 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:48,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-08 17:02:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-08 17:02:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.2) internal successors, (84), 73 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2024-11-08 17:02:48,885 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 23 [2024-11-08 17:02:48,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:48,886 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2024-11-08 17:02:48,887 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) [2024-11-08 17:02:48,887 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2024-11-08 17:02:48,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 17:02:48,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:48,888 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:48,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-08 17:02:48,888 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:48,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:48,889 INFO L85 PathProgramCache]: Analyzing trace with hash 418290378, now seen corresponding path program 1 times [2024-11-08 17:02:48,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:48,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592528177] [2024-11-08 17:02:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:48,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:49,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:49,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592528177] [2024-11-08 17:02:49,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592528177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:49,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:02:49,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 17:02:49,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292937963] [2024-11-08 17:02:49,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:49,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:02:49,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:49,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:02:49,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:02:49,189 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 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) [2024-11-08 17:02:49,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:49,282 INFO L93 Difference]: Finished difference Result 110 states and 124 transitions. [2024-11-08 17:02:49,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:02:49,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 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 [2024-11-08 17:02:49,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:49,283 INFO L225 Difference]: With dead ends: 110 [2024-11-08 17:02:49,283 INFO L226 Difference]: Without dead ends: 95 [2024-11-08 17:02:49,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:02:49,285 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:49,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 163 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:49,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-08 17:02:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 76. [2024-11-08 17:02:49,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 75 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:49,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2024-11-08 17:02:49,292 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 23 [2024-11-08 17:02:49,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:49,293 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2024-11-08 17:02:49,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 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) [2024-11-08 17:02:49,293 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2024-11-08 17:02:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 17:02:49,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:49,293 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:49,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-08 17:02:49,294 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:49,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:49,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1546261644, now seen corresponding path program 1 times [2024-11-08 17:02:49,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:49,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412700627] [2024-11-08 17:02:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:49,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:49,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:49,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412700627] [2024-11-08 17:02:49,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412700627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:49,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711311379] [2024-11-08 17:02:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:49,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:49,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:02:49,619 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:02:49,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:02:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:49,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:02:49,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:02:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:49,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:02:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:02:49,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711311379] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:49,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:02:49,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 5] total 14 [2024-11-08 17:02:49,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434928479] [2024-11-08 17:02:49,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:49,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:02:49,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:49,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:02:49,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:02:49,892 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:49,908 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2024-11-08 17:02:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:02:49,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-11-08 17:02:49,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:49,909 INFO L225 Difference]: With dead ends: 77 [2024-11-08 17:02:49,909 INFO L226 Difference]: Without dead ends: 76 [2024-11-08 17:02:49,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:02:49,911 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:49,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 65 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:02:49,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-08 17:02:49,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-08 17:02:49,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 75 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2024-11-08 17:02:49,914 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 25 [2024-11-08 17:02:49,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:49,915 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2024-11-08 17:02:49,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2024-11-08 17:02:49,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 17:02:49,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:49,916 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:49,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:02:50,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:50,120 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:50,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:50,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1546296465, now seen corresponding path program 1 times [2024-11-08 17:02:50,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:50,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012154533] [2024-11-08 17:02:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:50,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:50,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:50,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012154533] [2024-11-08 17:02:50,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012154533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:50,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749791185] [2024-11-08 17:02:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:50,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:50,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:02:50,346 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:02:50,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:02:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:50,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 17:02:50,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:02:50,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:02:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:02:50,621 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:02:50,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749791185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:50,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:02:50,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-08 17:02:50,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101313054] [2024-11-08 17:02:50,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:50,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:02:50,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:50,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:02:50,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:02:50,625 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:50,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:50,687 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2024-11-08 17:02:50,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:02:50,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-11-08 17:02:50,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:50,689 INFO L225 Difference]: With dead ends: 92 [2024-11-08 17:02:50,689 INFO L226 Difference]: Without dead ends: 73 [2024-11-08 17:02:50,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:02:50,692 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:50,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:50,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-08 17:02:50,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-08 17:02:50,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 72 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:50,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2024-11-08 17:02:50,698 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 25 [2024-11-08 17:02:50,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:50,698 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2024-11-08 17:02:50,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:50,699 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2024-11-08 17:02:50,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 17:02:50,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:50,700 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:50,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:02:50,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:50,901 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:50,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash -259141869, now seen corresponding path program 1 times [2024-11-08 17:02:50,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:50,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656748284] [2024-11-08 17:02:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:50,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:51,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:51,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656748284] [2024-11-08 17:02:51,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656748284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:51,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269262069] [2024-11-08 17:02:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:51,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:51,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:02:51,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:02:51,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:02:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:51,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 17:02:51,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:02:51,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:02:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:02:51,469 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:02:51,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269262069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:51,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:02:51,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2024-11-08 17:02:51,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428913296] [2024-11-08 17:02:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:51,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:02:51,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:02:51,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:02:51,472 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:51,574 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2024-11-08 17:02:51,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:02:51,575 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-11-08 17:02:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:51,575 INFO L225 Difference]: With dead ends: 82 [2024-11-08 17:02:51,575 INFO L226 Difference]: Without dead ends: 66 [2024-11-08 17:02:51,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:02:51,576 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:51,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 227 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:02:51,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-08 17:02:51,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2024-11-08 17:02:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 59 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) [2024-11-08 17:02:51,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2024-11-08 17:02:51,580 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 25 [2024-11-08 17:02:51,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:51,580 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2024-11-08 17:02:51,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:51,580 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2024-11-08 17:02:51,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-08 17:02:51,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:51,581 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:51,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:02:51,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:51,785 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:51,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:51,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1119464174, now seen corresponding path program 1 times [2024-11-08 17:02:51,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:51,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183345094] [2024-11-08 17:02:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:51,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:52,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:52,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183345094] [2024-11-08 17:02:52,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183345094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:52,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631328350] [2024-11-08 17:02:52,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:52,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:52,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:02:52,192 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:02:52,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:02:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:52,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 17:02:52,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:02:52,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:02:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:52,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:02:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:52,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631328350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:02:52,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:02:52,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2024-11-08 17:02:52,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844798249] [2024-11-08 17:02:52,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:02:52,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 17:02:52,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:52,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 17:02:52,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2024-11-08 17:02:52,853 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:53,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:53,142 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2024-11-08 17:02:53,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:02:53,143 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-08 17:02:53,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:53,144 INFO L225 Difference]: With dead ends: 76 [2024-11-08 17:02:53,144 INFO L226 Difference]: Without dead ends: 76 [2024-11-08 17:02:53,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:02:53,145 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:53,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 204 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:02:53,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-08 17:02:53,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2024-11-08 17:02:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 65 states have (on average 1.2) internal successors, (78), 68 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:53,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2024-11-08 17:02:53,149 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 27 [2024-11-08 17:02:53,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:53,149 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2024-11-08 17:02:53,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:53,150 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2024-11-08 17:02:53,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 17:02:53,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:53,150 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:53,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:02:53,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:53,351 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:53,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:53,354 INFO L85 PathProgramCache]: Analyzing trace with hash -729331621, now seen corresponding path program 1 times [2024-11-08 17:02:53,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:53,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774819440] [2024-11-08 17:02:53,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:53,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:02:53,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:53,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774819440] [2024-11-08 17:02:53,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774819440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:53,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839262864] [2024-11-08 17:02:53,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:53,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:53,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:02:53,911 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:02:53,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:02:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:54,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 17:02:54,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:02:54,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:02:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:02:54,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:02:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:02:54,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839262864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:02:54,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:02:54,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2024-11-08 17:02:54,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588569482] [2024-11-08 17:02:54,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:02:54,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 17:02:54,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:54,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 17:02:54,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2024-11-08 17:02:54,594 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:54,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:54,951 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2024-11-08 17:02:54,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:02:54,952 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-08 17:02:54,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:54,952 INFO L225 Difference]: With dead ends: 77 [2024-11-08 17:02:54,953 INFO L226 Difference]: Without dead ends: 77 [2024-11-08 17:02:54,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:02:54,954 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 51 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:54,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 260 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:02:54,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-08 17:02:54,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2024-11-08 17:02:54,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.196969696969697) internal successors, (79), 69 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2024-11-08 17:02:54,958 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 29 [2024-11-08 17:02:54,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:54,958 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2024-11-08 17:02:54,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:54,959 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2024-11-08 17:02:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 17:02:54,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:54,959 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:54,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 17:02:55,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-08 17:02:55,165 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:55,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:55,166 INFO L85 PathProgramCache]: Analyzing trace with hash 463893215, now seen corresponding path program 2 times [2024-11-08 17:02:55,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:55,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659193087] [2024-11-08 17:02:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:55,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:55,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:55,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659193087] [2024-11-08 17:02:55,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659193087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:55,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624891488] [2024-11-08 17:02:55,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:02:55,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:55,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:02:55,662 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:02:55,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:02:55,806 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:02:55,807 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:02:55,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-08 17:02:55,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:02:55,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:02:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:56,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:02:56,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:02:56,348 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 24 treesize of output 20 [2024-11-08 17:02:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:56,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624891488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:02:56,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:02:56,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-08 17:02:56,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170746222] [2024-11-08 17:02:56,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:02:56,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:02:56,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:56,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:02:56,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:02:56,671 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 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) [2024-11-08 17:02:56,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:56,911 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2024-11-08 17:02:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:02:56,911 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-08 17:02:56,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:56,912 INFO L225 Difference]: With dead ends: 124 [2024-11-08 17:02:56,912 INFO L226 Difference]: Without dead ends: 106 [2024-11-08 17:02:56,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:02:56,913 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 28 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:56,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 419 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:02:56,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-08 17:02:56,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 99. [2024-11-08 17:02:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.168421052631579) internal successors, (111), 98 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2024-11-08 17:02:56,919 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 30 [2024-11-08 17:02:56,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:56,919 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2024-11-08 17:02:56,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 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) [2024-11-08 17:02:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2024-11-08 17:02:56,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 17:02:56,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:56,921 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:56,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 17:02:57,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-08 17:02:57,125 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:57,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:57,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1134443759, now seen corresponding path program 1 times [2024-11-08 17:02:57,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:57,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354759394] [2024-11-08 17:02:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:57,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:02:57,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:57,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354759394] [2024-11-08 17:02:57,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354759394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:57,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658555439] [2024-11-08 17:02:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:57,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:57,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:02:57,486 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:02:57,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:02:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:57,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 17:02:57,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:02:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:02:57,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:02:58,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-08 17:02:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:02:58,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658555439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:02:58,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:02:58,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2024-11-08 17:02:58,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330767719] [2024-11-08 17:02:58,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:02:58,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 17:02:58,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:58,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 17:02:58,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:02:58,171 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 21 states, 20 states have (on average 3.2) internal successors, (64), 21 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) [2024-11-08 17:02:58,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:58,536 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2024-11-08 17:02:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:02:58,537 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.2) internal successors, (64), 21 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-08 17:02:58,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:58,538 INFO L225 Difference]: With dead ends: 109 [2024-11-08 17:02:58,538 INFO L226 Difference]: Without dead ends: 106 [2024-11-08 17:02:58,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:02:58,540 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 22 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:58,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 402 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:02:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-08 17:02:58,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 97. [2024-11-08 17:02:58,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 93 states have (on average 1.1505376344086022) internal successors, (107), 96 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:02:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2024-11-08 17:02:58,544 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 30 [2024-11-08 17:02:58,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:58,544 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2024-11-08 17:02:58,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.2) internal successors, (64), 21 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) [2024-11-08 17:02:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2024-11-08 17:02:58,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 17:02:58,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:58,545 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:58,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 17:02:58,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-08 17:02:58,746 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:02:58,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:58,746 INFO L85 PathProgramCache]: Analyzing trace with hash 157161367, now seen corresponding path program 3 times [2024-11-08 17:02:58,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:58,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322851408] [2024-11-08 17:02:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:58,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:59,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:59,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322851408] [2024-11-08 17:02:59,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322851408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:59,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659639301] [2024-11-08 17:02:59,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:02:59,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:59,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:02:59,238 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:02:59,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:02:59,406 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 17:02:59,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:02:59,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-08 17:02:59,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:02:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:02:59,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:02:59,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-08 17:03:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:03:00,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659639301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:03:00,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:03:00,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2024-11-08 17:03:00,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327292940] [2024-11-08 17:03:00,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:03:00,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:03:00,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:00,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:03:00,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:03:00,089 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 24 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:00,571 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2024-11-08 17:03:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:03:00,572 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 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 34 [2024-11-08 17:03:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:00,573 INFO L225 Difference]: With dead ends: 109 [2024-11-08 17:03:00,573 INFO L226 Difference]: Without dead ends: 109 [2024-11-08 17:03:00,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2024-11-08 17:03:00,574 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 57 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:00,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 456 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:03:00,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-08 17:03:00,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2024-11-08 17:03:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 104 states have (on average 1.1538461538461537) internal successors, (120), 107 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:00,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2024-11-08 17:03:00,579 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 34 [2024-11-08 17:03:00,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:00,579 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2024-11-08 17:03:00,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:00,579 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2024-11-08 17:03:00,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 17:03:00,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:00,580 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:00,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 17:03:00,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-08 17:03:00,785 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:03:00,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:00,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1623228898, now seen corresponding path program 2 times [2024-11-08 17:03:00,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:00,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277999888] [2024-11-08 17:03:00,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:00,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:03:01,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:01,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277999888] [2024-11-08 17:03:01,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277999888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:01,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191254906] [2024-11-08 17:03:01,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:03:01,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:01,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:01,015 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:01,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:03:01,204 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:03:01,204 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:03:01,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 17:03:01,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:01,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:03:01,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-08 17:03:01,738 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:03:01,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2024-11-08 17:03:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:03:01,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:03:02,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:03:02,551 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 24 treesize of output 20 [2024-11-08 17:03:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:03:02,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191254906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:03:02,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:03:02,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 29 [2024-11-08 17:03:02,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867595988] [2024-11-08 17:03:02,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:03:02,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 17:03:02,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:02,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 17:03:02,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2024-11-08 17:03:02,717 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 29 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:04,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:04,016 INFO L93 Difference]: Finished difference Result 158 states and 172 transitions. [2024-11-08 17:03:04,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 17:03:04,017 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 29 states have internal predecessors, (94), 0 states have call successors, (0), 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 34 [2024-11-08 17:03:04,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:04,018 INFO L225 Difference]: With dead ends: 158 [2024-11-08 17:03:04,018 INFO L226 Difference]: Without dead ends: 145 [2024-11-08 17:03:04,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=146, Invalid=1414, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 17:03:04,019 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:04,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 447 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 17:03:04,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-08 17:03:04,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 132. [2024-11-08 17:03:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 128 states have (on average 1.140625) internal successors, (146), 131 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2024-11-08 17:03:04,026 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 34 [2024-11-08 17:03:04,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:04,026 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2024-11-08 17:03:04,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 29 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:04,027 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2024-11-08 17:03:04,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 17:03:04,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:04,028 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:04,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 17:03:04,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-08 17:03:04,232 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:03:04,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:04,233 INFO L85 PathProgramCache]: Analyzing trace with hash 479979066, now seen corresponding path program 4 times [2024-11-08 17:03:04,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:04,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248056431] [2024-11-08 17:03:04,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:04,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:03:04,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:04,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248056431] [2024-11-08 17:03:04,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248056431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:04,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687964593] [2024-11-08 17:03:04,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:03:04,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:04,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:04,798 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:04,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:03:04,955 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:03:04,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:03:04,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-08 17:03:04,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:05,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-08 17:03:06,086 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2024-11-08 17:03:06,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 39 [2024-11-08 17:03:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:03:06,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:03:07,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2024-11-08 17:03:07,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2024-11-08 17:03:07,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-08 17:03:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:03:07,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687964593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:03:07,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:03:07,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-08 17:03:07,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367599458] [2024-11-08 17:03:07,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:03:07,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 17:03:07,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 17:03:07,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1326, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 17:03:07,499 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:08,009 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int#0| |c_ULTIMATE.start_cstrlcpy_#t~post6#1.base|))) (let ((.cse0 (+ |c_ULTIMATE.start_cstrlcpy_#t~post6#1.offset| 1)) (.cse6 (select |c_#length| |c_ULTIMATE.start_cstrlcpy_#t~post6#1.base|)) (.cse2 (+ |c_ULTIMATE.start_cstrlcpy_~s~0#1.offset| 1)) (.cse4 (= (select .cse5 |c_ULTIMATE.start_cstrlcpy_#t~post6#1.offset|) 0)) (.cse3 (select |c_#length| |c_ULTIMATE.start_cstrlcpy_~s~0#1.base|)) (.cse1 (select |c_#memory_int#0| |c_ULTIMATE.start_cstrlcpy_~s~0#1.base|))) (and (= |c_ULTIMATE.start_cstrlcpy_#t~post6#1.offset| 0) (<= 0 |c_ULTIMATE.start_cstrlcpy_#t~post6#1.offset|) (= .cse0 |c_ULTIMATE.start_cstrlcpy_~s~0#1.offset|) (= (select .cse1 .cse2) 0) (or (and (<= 0 |c_ULTIMATE.start_cstrlcpy_~s~0#1.offset|) (<= .cse2 .cse3)) .cse4) (exists ((|v_ULTIMATE.start_main_~length~0#1_26| Int) (|v_ULTIMATE.start_main_~nondetString2~0#1.offset_27| Int)) (and (<= |c_ULTIMATE.start_cstrlcpy_#t~post6#1.offset| |v_ULTIMATE.start_main_~nondetString2~0#1.offset_27|) (<= 1 |v_ULTIMATE.start_main_~length~0#1_26|) (= (select .cse5 (+ (- 1) |v_ULTIMATE.start_main_~nondetString2~0#1.offset_27| |v_ULTIMATE.start_main_~length~0#1_26|)) 0) (<= (+ |v_ULTIMATE.start_main_~nondetString2~0#1.offset_27| |v_ULTIMATE.start_main_~length~0#1_26|) .cse6))) (= |c_ULTIMATE.start_cstrlcpy_#t~post6#1.base| |c_ULTIMATE.start_cstrlcpy_~s~0#1.base|) (<= .cse0 .cse6) (or (= (select .cse1 |c_ULTIMATE.start_cstrlcpy_~s~0#1.offset|) 0) (and (<= (+ 2 |c_ULTIMATE.start_cstrlcpy_~s~0#1.offset|) .cse3) (<= 0 .cse2)) .cse4) (forall ((|v_ULTIMATE.start_cstrlcpy_#t~post6#1.offset_39| Int)) (or (< |c_ULTIMATE.start_cstrlcpy_~s~0#1.offset| |v_ULTIMATE.start_cstrlcpy_#t~post6#1.offset_39|) (< |v_ULTIMATE.start_cstrlcpy_#t~post6#1.offset_39| 0) (= (select .cse1 (+ |v_ULTIMATE.start_cstrlcpy_#t~post6#1.offset_39| 1)) 0) (= 0 (select .cse1 (+ 2 |v_ULTIMATE.start_cstrlcpy_#t~post6#1.offset_39|))) (< (+ 3 |v_ULTIMATE.start_cstrlcpy_#t~post6#1.offset_39|) .cse3) (= (select .cse1 |v_ULTIMATE.start_cstrlcpy_#t~post6#1.offset_39|) 0)))))) is different from false [2024-11-08 17:03:09,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:09,752 INFO L93 Difference]: Finished difference Result 227 states and 247 transitions. [2024-11-08 17:03:09,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 17:03:09,753 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 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 37 [2024-11-08 17:03:09,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:09,754 INFO L225 Difference]: With dead ends: 227 [2024-11-08 17:03:09,754 INFO L226 Difference]: Without dead ends: 145 [2024-11-08 17:03:09,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=337, Invalid=2744, Unknown=3, NotChecked=108, Total=3192 [2024-11-08 17:03:09,756 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 168 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:09,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 598 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 741 Invalid, 0 Unknown, 33 Unchecked, 1.0s Time] [2024-11-08 17:03:09,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-08 17:03:09,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2024-11-08 17:03:09,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 1.1240875912408759) internal successors, (154), 140 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:09,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2024-11-08 17:03:09,760 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 37 [2024-11-08 17:03:09,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:09,761 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2024-11-08 17:03:09,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2024-11-08 17:03:09,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 17:03:09,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:09,762 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:09,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 17:03:09,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-08 17:03:09,966 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:03:09,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash 293582578, now seen corresponding path program 2 times [2024-11-08 17:03:09,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:09,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734921944] [2024-11-08 17:03:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:09,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:03:10,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:10,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734921944] [2024-11-08 17:03:10,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734921944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:10,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561735498] [2024-11-08 17:03:10,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:03:10,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:10,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:10,437 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:10,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:03:10,610 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:03:10,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:03:10,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 17:03:10,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:10,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:03:10,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-08 17:03:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:03:10,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:03:10,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:03:10,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:03:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:03:11,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561735498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:03:11,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:03:11,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-11-08 17:03:11,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081286459] [2024-11-08 17:03:11,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:03:11,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:03:11,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:11,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:03:11,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:03:11,092 INFO L87 Difference]: Start difference. First operand 141 states and 154 transitions. Second operand has 24 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 24 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:12,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:12,002 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2024-11-08 17:03:12,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 17:03:12,003 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 24 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-08 17:03:12,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:12,004 INFO L225 Difference]: With dead ends: 143 [2024-11-08 17:03:12,004 INFO L226 Difference]: Without dead ends: 115 [2024-11-08 17:03:12,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=1539, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 17:03:12,006 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 28 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:12,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 464 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:03:12,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-08 17:03:12,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2024-11-08 17:03:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 1.1111111111111112) internal successors, (120), 111 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:12,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2024-11-08 17:03:12,011 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 39 [2024-11-08 17:03:12,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:12,012 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2024-11-08 17:03:12,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 24 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:12,012 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2024-11-08 17:03:12,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 17:03:12,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:12,013 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:12,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 17:03:12,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-08 17:03:12,217 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:03:12,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:12,218 INFO L85 PathProgramCache]: Analyzing trace with hash 161470530, now seen corresponding path program 1 times [2024-11-08 17:03:12,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:12,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624563115] [2024-11-08 17:03:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:12,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:03:12,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:12,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624563115] [2024-11-08 17:03:12,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624563115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:12,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509728598] [2024-11-08 17:03:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:12,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:12,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:12,923 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:12,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 17:03:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:13,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-08 17:03:13,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:13,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:03:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:03:13,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:03:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:03:14,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509728598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:03:14,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:03:14,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2024-11-08 17:03:14,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256237441] [2024-11-08 17:03:14,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:03:14,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 17:03:14,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:14,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 17:03:14,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2024-11-08 17:03:14,106 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand has 31 states, 30 states have (on average 3.933333333333333) internal successors, (118), 31 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:14,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:14,808 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2024-11-08 17:03:14,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 17:03:14,809 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.933333333333333) internal successors, (118), 31 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-08 17:03:14,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:14,810 INFO L225 Difference]: With dead ends: 124 [2024-11-08 17:03:14,810 INFO L226 Difference]: Without dead ends: 124 [2024-11-08 17:03:14,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=1045, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 17:03:14,811 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 31 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:14,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 471 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:03:14,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-08 17:03:14,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2024-11-08 17:03:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 119 states have (on average 1.1176470588235294) internal successors, (133), 122 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2024-11-08 17:03:14,814 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 47 [2024-11-08 17:03:14,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:14,815 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2024-11-08 17:03:14,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.933333333333333) internal successors, (118), 31 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:14,815 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2024-11-08 17:03:14,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 17:03:14,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:14,816 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:14,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 17:03:15,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-08 17:03:15,020 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:03:15,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash -471313269, now seen corresponding path program 3 times [2024-11-08 17:03:15,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:15,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423553067] [2024-11-08 17:03:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:15,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 17:03:15,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:15,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423553067] [2024-11-08 17:03:15,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423553067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:15,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656731506] [2024-11-08 17:03:15,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:03:15,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:15,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:15,331 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:15,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 17:03:15,552 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 17:03:15,552 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:03:15,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-08 17:03:15,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:15,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:03:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:03:15,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:03:15,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:03:15,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:03:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:03:16,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656731506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:03:16,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:03:16,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 24 [2024-11-08 17:03:16,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031417228] [2024-11-08 17:03:16,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:03:16,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:03:16,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:16,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:03:16,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:03:16,082 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:17,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:17,024 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2024-11-08 17:03:17,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-08 17:03:17,024 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-08 17:03:17,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:17,025 INFO L225 Difference]: With dead ends: 176 [2024-11-08 17:03:17,025 INFO L226 Difference]: Without dead ends: 121 [2024-11-08 17:03:17,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 17:03:17,027 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:17,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 612 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:03:17,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-08 17:03:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2024-11-08 17:03:17,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 1.117117117117117) internal successors, (124), 114 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:17,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2024-11-08 17:03:17,036 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 47 [2024-11-08 17:03:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:17,036 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2024-11-08 17:03:17,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:17,037 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2024-11-08 17:03:17,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 17:03:17,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:17,037 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:17,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 17:03:17,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-08 17:03:17,238 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:03:17,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash 5235119, now seen corresponding path program 2 times [2024-11-08 17:03:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41577186] [2024-11-08 17:03:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:03:17,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:17,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41577186] [2024-11-08 17:03:17,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41577186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:17,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732769835] [2024-11-08 17:03:17,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:03:17,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:17,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:17,987 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:17,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 17:03:18,179 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:03:18,179 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:03:18,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-08 17:03:18,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:18,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:03:19,085 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:03:19,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:03:19,089 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 10 [2024-11-08 17:03:19,093 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:03:19,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:03:19,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:03:19,407 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 24 treesize of output 20 [2024-11-08 17:03:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:03:19,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732769835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:03:19,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:03:19,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 38 [2024-11-08 17:03:19,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088753710] [2024-11-08 17:03:19,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:03:19,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 17:03:19,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:19,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 17:03:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 17:03:19,936 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand has 38 states, 38 states have (on average 3.1842105263157894) internal successors, (121), 38 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:20,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:20,628 INFO L93 Difference]: Finished difference Result 206 states and 221 transitions. [2024-11-08 17:03:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 17:03:20,628 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1842105263157894) internal successors, (121), 38 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-08 17:03:20,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:20,629 INFO L225 Difference]: With dead ends: 206 [2024-11-08 17:03:20,629 INFO L226 Difference]: Without dead ends: 162 [2024-11-08 17:03:20,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=149, Invalid=1573, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 17:03:20,630 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 32 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:20,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 900 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:03:20,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-08 17:03:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 158. [2024-11-08 17:03:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 154 states have (on average 1.103896103896104) internal successors, (170), 157 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions. [2024-11-08 17:03:20,635 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 50 [2024-11-08 17:03:20,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:20,635 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 170 transitions. [2024-11-08 17:03:20,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.1842105263157894) internal successors, (121), 38 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:20,636 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 170 transitions. [2024-11-08 17:03:20,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 17:03:20,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:20,637 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:20,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 17:03:20,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-08 17:03:20,841 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:03:20,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1814042265, now seen corresponding path program 3 times [2024-11-08 17:03:20,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:20,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090509602] [2024-11-08 17:03:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:20,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:03:21,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:21,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090509602] [2024-11-08 17:03:21,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090509602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:21,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830563437] [2024-11-08 17:03:21,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:03:21,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:21,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:21,556 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:21,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 17:03:21,801 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 17:03:21,801 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:03:21,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-08 17:03:21,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:22,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-08 17:03:23,115 INFO L349 Elim1Store]: treesize reduction 4, result has 81.8 percent of original size [2024-11-08 17:03:23,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2024-11-08 17:03:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 17:03:23,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:03:32,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2024-11-08 17:03:32,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2024-11-08 17:03:32,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 17:03:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 17:03:33,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830563437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:03:33,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:03:33,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 18] total 47 [2024-11-08 17:03:33,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509199838] [2024-11-08 17:03:33,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:03:33,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-08 17:03:33,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:33,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-08 17:03:33,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2022, Unknown=2, NotChecked=0, Total=2256 [2024-11-08 17:03:33,074 INFO L87 Difference]: Start difference. First operand 158 states and 170 transitions. Second operand has 48 states, 47 states have (on average 2.9148936170212765) internal successors, (137), 48 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:36,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:36,330 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2024-11-08 17:03:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-08 17:03:36,330 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.9148936170212765) internal successors, (137), 48 states have internal predecessors, (137), 0 states have call successors, (0), 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 54 [2024-11-08 17:03:36,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:36,331 INFO L225 Difference]: With dead ends: 183 [2024-11-08 17:03:36,331 INFO L226 Difference]: Without dead ends: 183 [2024-11-08 17:03:36,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=571, Invalid=4683, Unknown=2, NotChecked=0, Total=5256 [2024-11-08 17:03:36,333 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 190 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:36,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 765 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 17:03:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-08 17:03:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2024-11-08 17:03:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 168 states have (on average 1.119047619047619) internal successors, (188), 171 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 188 transitions. [2024-11-08 17:03:36,339 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 188 transitions. Word has length 54 [2024-11-08 17:03:36,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:36,339 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 188 transitions. [2024-11-08 17:03:36,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.9148936170212765) internal successors, (137), 48 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:36,340 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 188 transitions. [2024-11-08 17:03:36,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 17:03:36,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:36,341 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:36,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 17:03:36,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-08 17:03:36,542 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:03:36,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:36,542 INFO L85 PathProgramCache]: Analyzing trace with hash 166417499, now seen corresponding path program 4 times [2024-11-08 17:03:36,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:36,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062717213] [2024-11-08 17:03:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:36,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:03:37,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:37,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062717213] [2024-11-08 17:03:37,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062717213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:37,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936176283] [2024-11-08 17:03:37,314 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:03:37,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:37,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:37,317 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:37,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 17:03:37,598 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:03:37,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:03:37,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-08 17:03:37,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:37,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:03:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:03:37,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:03:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:03:38,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936176283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:03:38,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:03:38,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2024-11-08 17:03:38,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585453339] [2024-11-08 17:03:38,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:03:38,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 17:03:38,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 17:03:38,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2024-11-08 17:03:38,885 INFO L87 Difference]: Start difference. First operand 172 states and 188 transitions. Second operand has 29 states, 28 states have (on average 4.214285714285714) internal successors, (118), 29 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:39,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:39,554 INFO L93 Difference]: Finished difference Result 175 states and 189 transitions. [2024-11-08 17:03:39,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 17:03:39,555 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.214285714285714) internal successors, (118), 29 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-08 17:03:39,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:39,556 INFO L225 Difference]: With dead ends: 175 [2024-11-08 17:03:39,556 INFO L226 Difference]: Without dead ends: 175 [2024-11-08 17:03:39,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 17:03:39,557 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 38 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:39,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 418 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:03:39,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-08 17:03:39,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2024-11-08 17:03:39,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 169 states have (on average 1.1124260355029585) internal successors, (188), 172 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:39,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 188 transitions. [2024-11-08 17:03:39,562 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 188 transitions. Word has length 55 [2024-11-08 17:03:39,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:39,562 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 188 transitions. [2024-11-08 17:03:39,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.214285714285714) internal successors, (118), 29 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:39,563 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 188 transitions. [2024-11-08 17:03:39,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 17:03:39,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:39,564 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:39,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-08 17:03:39,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:39,764 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:03:39,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:39,765 INFO L85 PathProgramCache]: Analyzing trace with hash 863975185, now seen corresponding path program 3 times [2024-11-08 17:03:39,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:39,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974617539] [2024-11-08 17:03:39,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:39,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:03:40,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:40,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974617539] [2024-11-08 17:03:40,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974617539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:40,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314662798] [2024-11-08 17:03:40,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:03:40,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:40,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:40,390 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:40,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 17:03:40,719 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 17:03:40,719 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:03:40,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 17:03:40,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:03:41,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:03:41,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-08 17:03:41,591 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:03:41,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314662798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:03:41,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:03:41,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2024-11-08 17:03:41,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111179101] [2024-11-08 17:03:41,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:03:41,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 17:03:41,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:41,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 17:03:41,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2024-11-08 17:03:41,595 INFO L87 Difference]: Start difference. First operand 173 states and 188 transitions. Second operand has 32 states, 31 states have (on average 3.7096774193548385) internal successors, (115), 32 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:42,428 INFO L93 Difference]: Finished difference Result 180 states and 192 transitions. [2024-11-08 17:03:42,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 17:03:42,429 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.7096774193548385) internal successors, (115), 32 states have internal predecessors, (115), 0 states have call successors, (0), 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 56 [2024-11-08 17:03:42,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:42,429 INFO L225 Difference]: With dead ends: 180 [2024-11-08 17:03:42,430 INFO L226 Difference]: Without dead ends: 177 [2024-11-08 17:03:42,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=182, Invalid=1150, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 17:03:42,431 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 25 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:42,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 758 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:03:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-08 17:03:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 171. [2024-11-08 17:03:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 167 states have (on average 1.095808383233533) internal successors, (183), 170 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 183 transitions. [2024-11-08 17:03:42,438 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 183 transitions. Word has length 56 [2024-11-08 17:03:42,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:42,438 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 183 transitions. [2024-11-08 17:03:42,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.7096774193548385) internal successors, (115), 32 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 183 transitions. [2024-11-08 17:03:42,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 17:03:42,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:42,440 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:42,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-08 17:03:42,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-08 17:03:42,641 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:03:42,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:42,641 INFO L85 PathProgramCache]: Analyzing trace with hash 425633415, now seen corresponding path program 4 times [2024-11-08 17:03:42,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:42,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676224577] [2024-11-08 17:03:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:42,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:03:44,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:44,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676224577] [2024-11-08 17:03:44,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676224577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:44,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000694638] [2024-11-08 17:03:44,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:03:44,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:44,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:44,297 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:44,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 17:03:44,517 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:03:44,517 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:03:44,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-08 17:03:44,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:44,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:03:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:03:45,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:03:45,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:03:45,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:03:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:03:45,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000694638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:03:45,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:03:45,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 37 [2024-11-08 17:03:45,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766260611] [2024-11-08 17:03:45,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:03:45,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-08 17:03:45,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:45,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-08 17:03:45,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1248, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 17:03:45,585 INFO L87 Difference]: Start difference. First operand 171 states and 183 transitions. Second operand has 37 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:48,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:48,476 INFO L93 Difference]: Finished difference Result 306 states and 327 transitions. [2024-11-08 17:03:48,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 17:03:48,477 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 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 60 [2024-11-08 17:03:48,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:48,478 INFO L225 Difference]: With dead ends: 306 [2024-11-08 17:03:48,478 INFO L226 Difference]: Without dead ends: 250 [2024-11-08 17:03:48,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=196, Invalid=2774, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 17:03:48,479 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 91 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:48,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1505 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 17:03:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-08 17:03:48,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 238. [2024-11-08 17:03:48,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 234 states have (on average 1.1153846153846154) internal successors, (261), 237 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:48,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 261 transitions. [2024-11-08 17:03:48,486 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 261 transitions. Word has length 60 [2024-11-08 17:03:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:48,487 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 261 transitions. [2024-11-08 17:03:48,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2432432432432434) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 261 transitions. [2024-11-08 17:03:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 17:03:48,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:48,488 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:48,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-08 17:03:48,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-08 17:03:48,689 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:03:48,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:48,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1677981154, now seen corresponding path program 5 times [2024-11-08 17:03:48,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:48,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526169354] [2024-11-08 17:03:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:48,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 17:03:49,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:49,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526169354] [2024-11-08 17:03:49,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526169354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:49,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327911604] [2024-11-08 17:03:49,109 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:03:49,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:49,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:49,112 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:49,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 17:03:49,499 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-08 17:03:49,500 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:03:49,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-08 17:03:49,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:49,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:03:49,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-08 17:03:51,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:03:51,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 15 [2024-11-08 17:03:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:03:51,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:03:52,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:03:52,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:03:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:03:53,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327911604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:03:53,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:03:53,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 39 [2024-11-08 17:03:53,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828276802] [2024-11-08 17:03:53,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:03:53,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 17:03:53,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:53,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 17:03:53,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1360, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 17:03:53,391 INFO L87 Difference]: Start difference. First operand 238 states and 261 transitions. Second operand has 39 states, 39 states have (on average 3.7948717948717947) internal successors, (148), 39 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:57,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:57,504 INFO L93 Difference]: Finished difference Result 331 states and 353 transitions. [2024-11-08 17:03:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 17:03:57,504 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.7948717948717947) internal successors, (148), 39 states have internal predecessors, (148), 0 states have call successors, (0), 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 60 [2024-11-08 17:03:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:57,505 INFO L225 Difference]: With dead ends: 331 [2024-11-08 17:03:57,505 INFO L226 Difference]: Without dead ends: 285 [2024-11-08 17:03:57,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=310, Invalid=3350, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 17:03:57,507 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 76 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:57,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 719 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 17:03:57,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-08 17:03:57,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 273. [2024-11-08 17:03:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 269 states have (on average 1.100371747211896) internal successors, (296), 272 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 296 transitions. [2024-11-08 17:03:57,518 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 296 transitions. Word has length 60 [2024-11-08 17:03:57,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:57,519 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 296 transitions. [2024-11-08 17:03:57,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.7948717948717947) internal successors, (148), 39 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:03:57,519 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 296 transitions. [2024-11-08 17:03:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 17:03:57,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:57,520 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:57,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 17:03:57,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-08 17:03:57,721 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:03:57,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:57,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1103992769, now seen corresponding path program 5 times [2024-11-08 17:03:57,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:57,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039332434] [2024-11-08 17:03:57,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:57,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 77 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:03:58,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:58,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039332434] [2024-11-08 17:03:58,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039332434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:58,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927261998] [2024-11-08 17:03:58,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:03:58,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:58,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:58,782 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:58,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 17:03:59,030 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-08 17:03:59,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:03:59,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-08 17:03:59,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:59,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:03:59,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-08 17:04:05,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:04:05,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 15 [2024-11-08 17:04:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 58 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:04:05,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:04:06,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:04:06,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:04:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:04:07,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927261998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:04:07,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:04:07,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 54 [2024-11-08 17:04:07,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236114055] [2024-11-08 17:04:07,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:04:07,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-08 17:04:07,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:07,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-08 17:04:07,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=2622, Unknown=1, NotChecked=0, Total=2862 [2024-11-08 17:04:07,811 INFO L87 Difference]: Start difference. First operand 273 states and 296 transitions. Second operand has 54 states, 54 states have (on average 3.4074074074074074) internal successors, (184), 54 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:18,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:04:23,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:04:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:23,214 INFO L93 Difference]: Finished difference Result 446 states and 478 transitions. [2024-11-08 17:04:23,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-08 17:04:23,214 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.4074074074074074) internal successors, (184), 54 states have internal predecessors, (184), 0 states have call successors, (0), 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 64 [2024-11-08 17:04:23,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:23,216 INFO L225 Difference]: With dead ends: 446 [2024-11-08 17:04:23,216 INFO L226 Difference]: Without dead ends: 363 [2024-11-08 17:04:23,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=469, Invalid=5080, Unknown=1, NotChecked=0, Total=5550 [2024-11-08 17:04:23,217 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 205 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:23,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1266 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1910 Invalid, 4 Unknown, 0 Unchecked, 11.1s Time] [2024-11-08 17:04:23,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-08 17:04:23,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2024-11-08 17:04:23,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 333 states have (on average 1.105105105105105) internal successors, (368), 336 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:23,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 368 transitions. [2024-11-08 17:04:23,235 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 368 transitions. Word has length 64 [2024-11-08 17:04:23,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:23,235 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 368 transitions. [2024-11-08 17:04:23,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.4074074074074074) internal successors, (184), 54 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 368 transitions. [2024-11-08 17:04:23,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 17:04:23,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:23,236 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:04:23,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-08 17:04:23,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-08 17:04:23,440 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:04:23,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:23,440 INFO L85 PathProgramCache]: Analyzing trace with hash -749082382, now seen corresponding path program 4 times [2024-11-08 17:04:23,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:23,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875174131] [2024-11-08 17:04:23,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:23,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 6 proven. 68 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:04:24,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:24,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875174131] [2024-11-08 17:04:24,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875174131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:04:24,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891783293] [2024-11-08 17:04:24,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:04:24,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:24,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:04:24,264 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:04:24,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 17:04:24,600 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:04:24,600 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:04:24,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-08 17:04:24,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:04:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 59 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:04:25,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:04:25,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-08 17:04:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 59 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:04:25,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891783293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:04:25,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:04:25,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 36 [2024-11-08 17:04:25,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054843627] [2024-11-08 17:04:25,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:04:25,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-08 17:04:25,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:25,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-08 17:04:25,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1143, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 17:04:25,766 INFO L87 Difference]: Start difference. First operand 337 states and 368 transitions. Second operand has 37 states, 36 states have (on average 3.9722222222222223) internal successors, (143), 37 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:26,470 INFO L93 Difference]: Finished difference Result 349 states and 374 transitions. [2024-11-08 17:04:26,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 17:04:26,471 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.9722222222222223) internal successors, (143), 37 states have internal predecessors, (143), 0 states have call successors, (0), 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 65 [2024-11-08 17:04:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:26,472 INFO L225 Difference]: With dead ends: 349 [2024-11-08 17:04:26,473 INFO L226 Difference]: Without dead ends: 346 [2024-11-08 17:04:26,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=237, Invalid=1485, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 17:04:26,473 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 44 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:26,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 537 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:04:26,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-08 17:04:26,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 337. [2024-11-08 17:04:26,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 333 states have (on average 1.0840840840840842) internal successors, (361), 336 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:26,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 361 transitions. [2024-11-08 17:04:26,480 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 361 transitions. Word has length 65 [2024-11-08 17:04:26,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:26,480 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 361 transitions. [2024-11-08 17:04:26,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.9722222222222223) internal successors, (143), 37 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:26,481 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 361 transitions. [2024-11-08 17:04:26,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 17:04:26,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:26,482 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:04:26,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-08 17:04:26,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-08 17:04:26,686 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:04:26,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:26,687 INFO L85 PathProgramCache]: Analyzing trace with hash 697714513, now seen corresponding path program 1 times [2024-11-08 17:04:26,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:26,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291080096] [2024-11-08 17:04:26,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:26,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 8 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:04:27,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:27,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291080096] [2024-11-08 17:04:27,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291080096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:04:27,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616943766] [2024-11-08 17:04:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:27,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:27,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:04:27,922 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:04:27,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 17:04:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:28,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-08 17:04:28,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:04:28,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:04:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 8 proven. 45 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:04:28,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:04:28,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:04:28,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:04:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 8 proven. 45 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:04:28,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616943766] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:04:28,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:04:28,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 30 [2024-11-08 17:04:28,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594638721] [2024-11-08 17:04:28,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:04:28,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 17:04:28,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:28,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 17:04:28,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2024-11-08 17:04:28,687 INFO L87 Difference]: Start difference. First operand 337 states and 361 transitions. Second operand has 30 states, 30 states have (on average 3.3666666666666667) internal successors, (101), 30 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:29,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:29,471 INFO L93 Difference]: Finished difference Result 332 states and 353 transitions. [2024-11-08 17:04:29,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 17:04:29,471 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.3666666666666667) internal successors, (101), 30 states have internal predecessors, (101), 0 states have call successors, (0), 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 68 [2024-11-08 17:04:29,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:29,472 INFO L225 Difference]: With dead ends: 332 [2024-11-08 17:04:29,472 INFO L226 Difference]: Without dead ends: 286 [2024-11-08 17:04:29,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 17:04:29,473 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:29,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 645 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:04:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-08 17:04:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2024-11-08 17:04:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 282 states have (on average 1.0851063829787233) internal successors, (306), 285 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 306 transitions. [2024-11-08 17:04:29,480 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 306 transitions. Word has length 68 [2024-11-08 17:04:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:29,481 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 306 transitions. [2024-11-08 17:04:29,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.3666666666666667) internal successors, (101), 30 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 306 transitions. [2024-11-08 17:04:29,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-08 17:04:29,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:29,483 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:04:29,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-08 17:04:29,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:29,683 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:04:29,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:29,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1335143462, now seen corresponding path program 6 times [2024-11-08 17:04:29,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:29,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958173681] [2024-11-08 17:04:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:29,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 113 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:04:30,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:30,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958173681] [2024-11-08 17:04:30,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958173681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:04:30,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254646227] [2024-11-08 17:04:30,699 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:04:30,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:30,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:04:30,701 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:04:30,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 17:04:31,031 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-08 17:04:31,032 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:04:31,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-08 17:04:31,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:04:31,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:04:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 113 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:04:31,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:04:31,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:04:31,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:04:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 113 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:04:31,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254646227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:04:31,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:04:31,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 35 [2024-11-08 17:04:31,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702644825] [2024-11-08 17:04:31,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:04:31,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 17:04:31,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:31,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 17:04:31,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1097, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 17:04:31,784 INFO L87 Difference]: Start difference. First operand 286 states and 306 transitions. Second operand has 35 states, 35 states have (on average 3.2857142857142856) internal successors, (115), 35 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:33,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:33,134 INFO L93 Difference]: Finished difference Result 441 states and 472 transitions. [2024-11-08 17:04:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 17:04:33,135 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2857142857142856) internal successors, (115), 35 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-08 17:04:33,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:33,136 INFO L225 Difference]: With dead ends: 441 [2024-11-08 17:04:33,136 INFO L226 Difference]: Without dead ends: 360 [2024-11-08 17:04:33,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=128, Invalid=1512, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 17:04:33,137 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 65 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:33,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1975 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 17:04:33,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-08 17:04:33,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 350. [2024-11-08 17:04:33,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 346 states have (on average 1.0895953757225434) internal successors, (377), 349 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:33,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 377 transitions. [2024-11-08 17:04:33,144 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 377 transitions. Word has length 71 [2024-11-08 17:04:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:33,144 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 377 transitions. [2024-11-08 17:04:33,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2857142857142856) internal successors, (115), 35 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 377 transitions. [2024-11-08 17:04:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:04:33,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:33,146 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:04:33,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-08 17:04:33,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:33,346 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:04:33,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1562344587, now seen corresponding path program 6 times [2024-11-08 17:04:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:33,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742551880] [2024-11-08 17:04:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:33,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 66 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-08 17:04:33,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:33,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742551880] [2024-11-08 17:04:33,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742551880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:04:33,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94674457] [2024-11-08 17:04:33,898 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:04:33,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:33,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:04:33,901 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:04:33,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 17:04:34,396 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-08 17:04:34,396 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:04:34,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-08 17:04:34,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:04:34,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:04:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 15 proven. 78 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:04:35,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:04:35,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:04:35,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:04:36,324 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 15 proven. 78 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:04:36,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94674457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:04:36,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:04:36,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 45 [2024-11-08 17:04:36,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389854500] [2024-11-08 17:04:36,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:04:36,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-08 17:04:36,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:36,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-08 17:04:36,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1870, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 17:04:36,327 INFO L87 Difference]: Start difference. First operand 350 states and 377 transitions. Second operand has 45 states, 45 states have (on average 3.7111111111111112) internal successors, (167), 45 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:39,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:39,000 INFO L93 Difference]: Finished difference Result 482 states and 506 transitions. [2024-11-08 17:04:39,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-08 17:04:39,001 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.7111111111111112) internal successors, (167), 45 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-08 17:04:39,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:39,003 INFO L225 Difference]: With dead ends: 482 [2024-11-08 17:04:39,003 INFO L226 Difference]: Without dead ends: 343 [2024-11-08 17:04:39,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=245, Invalid=4311, Unknown=0, NotChecked=0, Total=4556 [2024-11-08 17:04:39,005 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 26 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:39,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1166 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 17:04:39,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-08 17:04:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 334. [2024-11-08 17:04:39,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 330 states have (on average 1.0818181818181818) internal successors, (357), 333 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:39,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 357 transitions. [2024-11-08 17:04:39,013 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 357 transitions. Word has length 73 [2024-11-08 17:04:39,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:39,013 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 357 transitions. [2024-11-08 17:04:39,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.7111111111111112) internal successors, (167), 45 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 357 transitions. [2024-11-08 17:04:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 17:04:39,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:39,015 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:04:39,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-08 17:04:39,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:39,216 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:04:39,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:39,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1326698274, now seen corresponding path program 7 times [2024-11-08 17:04:39,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:39,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386695822] [2024-11-08 17:04:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:39,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 45 proven. 105 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:04:40,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:40,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386695822] [2024-11-08 17:04:40,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386695822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:04:40,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589723694] [2024-11-08 17:04:40,312 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 17:04:40,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:40,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:04:40,313 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:04:40,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-08 17:04:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:40,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-08 17:04:40,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:04:40,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:04:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 66 proven. 84 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:04:41,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:04:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 66 proven. 84 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:04:42,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589723694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:04:42,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:04:42,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 50 [2024-11-08 17:04:42,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647761333] [2024-11-08 17:04:42,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:04:42,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-08 17:04:42,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:42,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-08 17:04:42,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2252, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 17:04:42,380 INFO L87 Difference]: Start difference. First operand 334 states and 357 transitions. Second operand has 51 states, 50 states have (on average 3.8) internal successors, (190), 51 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:44,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:44,396 INFO L93 Difference]: Finished difference Result 362 states and 386 transitions. [2024-11-08 17:04:44,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 17:04:44,397 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 3.8) internal successors, (190), 51 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-08 17:04:44,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:44,398 INFO L225 Difference]: With dead ends: 362 [2024-11-08 17:04:44,399 INFO L226 Difference]: Without dead ends: 362 [2024-11-08 17:04:44,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=381, Invalid=3041, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 17:04:44,400 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 140 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:44,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1379 Invalid, 2130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 17:04:44,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-08 17:04:44,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 353. [2024-11-08 17:04:44,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 349 states have (on average 1.1002865329512894) internal successors, (384), 352 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 384 transitions. [2024-11-08 17:04:44,408 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 384 transitions. Word has length 75 [2024-11-08 17:04:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:44,409 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 384 transitions. [2024-11-08 17:04:44,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 3.8) internal successors, (190), 51 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:44,409 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 384 transitions. [2024-11-08 17:04:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 17:04:44,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:44,411 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:04:44,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-08 17:04:44,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:44,615 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:04:44,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:44,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1379270351, now seen corresponding path program 8 times [2024-11-08 17:04:44,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:44,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747253370] [2024-11-08 17:04:44,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:44,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 14 proven. 156 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:04:45,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:45,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747253370] [2024-11-08 17:04:45,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747253370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:04:45,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311791160] [2024-11-08 17:04:45,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:04:45,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:45,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:04:45,905 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:04:45,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-08 17:04:46,186 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:04:46,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:04:46,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-08 17:04:46,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:04:46,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:04:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 14 proven. 156 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:04:46,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:04:46,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:04:46,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:04:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 14 proven. 156 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:04:47,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311791160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:04:47,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:04:47,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 38 [2024-11-08 17:04:47,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134682207] [2024-11-08 17:04:47,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:04:47,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 17:04:47,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:47,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 17:04:47,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1306, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 17:04:47,016 INFO L87 Difference]: Start difference. First operand 353 states and 384 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 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) [2024-11-08 17:04:48,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:48,509 INFO L93 Difference]: Finished difference Result 551 states and 594 transitions. [2024-11-08 17:04:48,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 17:04:48,510 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 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 78 [2024-11-08 17:04:48,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:48,512 INFO L225 Difference]: With dead ends: 551 [2024-11-08 17:04:48,512 INFO L226 Difference]: Without dead ends: 440 [2024-11-08 17:04:48,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=140, Invalid=1840, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 17:04:48,513 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 78 mSDsluCounter, 2358 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:48,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2444 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1925 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 17:04:48,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-08 17:04:48,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 418. [2024-11-08 17:04:48,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 414 states have (on average 1.103864734299517) internal successors, (457), 417 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 457 transitions. [2024-11-08 17:04:48,523 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 457 transitions. Word has length 78 [2024-11-08 17:04:48,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:48,523 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 457 transitions. [2024-11-08 17:04:48,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 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) [2024-11-08 17:04:48,524 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 457 transitions. [2024-11-08 17:04:48,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-08 17:04:48,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:48,525 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:04:48,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-08 17:04:48,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:48,726 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:04:48,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:48,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1429170085, now seen corresponding path program 7 times [2024-11-08 17:04:48,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:48,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110931066] [2024-11-08 17:04:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:48,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 17:04:49,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:49,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110931066] [2024-11-08 17:04:49,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110931066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:04:49,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925858065] [2024-11-08 17:04:49,676 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 17:04:49,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:49,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:04:49,678 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:04:49,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-08 17:04:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:49,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-08 17:04:49,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:04:49,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:04:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 17:04:50,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:04:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 17:04:51,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925858065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:04:51,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:04:51,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 40 [2024-11-08 17:04:51,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595521479] [2024-11-08 17:04:51,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:04:51,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 17:04:51,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:51,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 17:04:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 17:04:51,325 INFO L87 Difference]: Start difference. First operand 418 states and 457 transitions. Second operand has 41 states, 40 states have (on average 4.05) internal successors, (162), 41 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:52,430 INFO L93 Difference]: Finished difference Result 426 states and 462 transitions. [2024-11-08 17:04:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 17:04:52,431 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 4.05) internal successors, (162), 41 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-08 17:04:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:52,432 INFO L225 Difference]: With dead ends: 426 [2024-11-08 17:04:52,432 INFO L226 Difference]: Without dead ends: 426 [2024-11-08 17:04:52,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=248, Invalid=1914, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 17:04:52,433 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 67 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:52,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 741 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 17:04:52,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-11-08 17:04:52,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 422. [2024-11-08 17:04:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 418 states have (on average 1.0980861244019138) internal successors, (459), 421 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:52,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 459 transitions. [2024-11-08 17:04:52,442 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 459 transitions. Word has length 81 [2024-11-08 17:04:52,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:52,443 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 459 transitions. [2024-11-08 17:04:52,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 4.05) internal successors, (162), 41 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:52,443 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 459 transitions. [2024-11-08 17:04:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-08 17:04:52,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:52,445 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:04:52,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-08 17:04:52,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-08 17:04:52,646 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:04:52,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:52,646 INFO L85 PathProgramCache]: Analyzing trace with hash -831405433, now seen corresponding path program 9 times [2024-11-08 17:04:52,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:52,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093290962] [2024-11-08 17:04:52,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:52,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 66 proven. 133 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:04:54,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:54,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093290962] [2024-11-08 17:04:54,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093290962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:04:54,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91772360] [2024-11-08 17:04:54,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:04:54,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:54,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:04:54,085 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:04:54,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-08 17:04:54,518 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-08 17:04:54,518 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:04:54,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-08 17:04:54,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:04:54,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:04:54,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-08 17:05:02,905 INFO L349 Elim1Store]: treesize reduction 8, result has 87.3 percent of original size [2024-11-08 17:05:02,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 69 [2024-11-08 17:05:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 95 proven. 83 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-08 17:05:03,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:40,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2024-11-08 17:06:40,284 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:06:40,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 84 [2024-11-08 17:06:41,866 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 21 proven. 157 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-08 17:06:41,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91772360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:06:41,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:06:41,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 27] total 74 [2024-11-08 17:06:41,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228971460] [2024-11-08 17:06:41,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:06:41,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-08 17:06:41,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:41,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-08 17:06:41,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=4954, Unknown=24, NotChecked=0, Total=5550 [2024-11-08 17:06:41,870 INFO L87 Difference]: Start difference. First operand 422 states and 459 transitions. Second operand has 75 states, 74 states have (on average 2.945945945945946) internal successors, (218), 75 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:00,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:07:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:01,515 INFO L93 Difference]: Finished difference Result 472 states and 503 transitions. [2024-11-08 17:07:01,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-08 17:07:01,516 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 2.945945945945946) internal successors, (218), 75 states have internal predecessors, (218), 0 states have call successors, (0), 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 82 [2024-11-08 17:07:01,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:01,518 INFO L225 Difference]: With dead ends: 472 [2024-11-08 17:07:01,518 INFO L226 Difference]: Without dead ends: 472 [2024-11-08 17:07:01,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4289 ImplicationChecksByTransitivity, 116.0s TimeCoverageRelationStatistics Valid=1777, Invalid=15228, Unknown=25, NotChecked=0, Total=17030 [2024-11-08 17:07:01,520 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 456 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:01,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1462 Invalid, 2853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2782 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2024-11-08 17:07:01,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-11-08 17:07:01,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 439. [2024-11-08 17:07:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 435 states have (on average 1.103448275862069) internal successors, (480), 438 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:01,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 480 transitions. [2024-11-08 17:07:01,530 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 480 transitions. Word has length 82 [2024-11-08 17:07:01,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:01,530 INFO L471 AbstractCegarLoop]: Abstraction has 439 states and 480 transitions. [2024-11-08 17:07:01,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 2.945945945945946) internal successors, (218), 75 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:01,531 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 480 transitions. [2024-11-08 17:07:01,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-08 17:07:01,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:01,532 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:01,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-08 17:07:01,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-08 17:07:01,733 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:07:01,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:01,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1354599663, now seen corresponding path program 5 times [2024-11-08 17:07:01,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:01,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104714910] [2024-11-08 17:07:01,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:01,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 15 proven. 100 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 17:07:02,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:02,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104714910] [2024-11-08 17:07:02,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104714910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:07:02,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208873365] [2024-11-08 17:07:02,526 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:07:02,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:02,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:07:02,529 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:07:02,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-08 17:07:03,339 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-08 17:07:03,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:07:03,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-08 17:07:03,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:07:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 28 proven. 87 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 17:07:03,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:07:04,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-08 17:07:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 28 proven. 87 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 17:07:04,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208873365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:07:04,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:07:04,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 41 [2024-11-08 17:07:04,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352480098] [2024-11-08 17:07:04,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:07:04,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-08 17:07:04,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:04,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-08 17:07:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1483, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 17:07:04,724 INFO L87 Difference]: Start difference. First operand 439 states and 480 transitions. Second operand has 42 states, 41 states have (on average 4.024390243902439) internal successors, (165), 42 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:05,665 INFO L93 Difference]: Finished difference Result 455 states and 491 transitions. [2024-11-08 17:07:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 17:07:05,665 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 4.024390243902439) internal successors, (165), 42 states have internal predecessors, (165), 0 states have call successors, (0), 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 82 [2024-11-08 17:07:05,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:05,667 INFO L225 Difference]: With dead ends: 455 [2024-11-08 17:07:05,667 INFO L226 Difference]: Without dead ends: 452 [2024-11-08 17:07:05,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=298, Invalid=1958, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 17:07:05,668 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 48 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:05,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 726 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:07:05,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-11-08 17:07:05,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 440. [2024-11-08 17:07:05,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 436 states have (on average 1.0871559633027523) internal successors, (474), 439 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 474 transitions. [2024-11-08 17:07:05,677 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 474 transitions. Word has length 82 [2024-11-08 17:07:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:05,677 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 474 transitions. [2024-11-08 17:07:05,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 4.024390243902439) internal successors, (165), 42 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 474 transitions. [2024-11-08 17:07:05,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-08 17:07:05,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:05,680 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:05,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-08 17:07:05,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-08 17:07:05,880 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:07:05,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:05,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1815531038, now seen corresponding path program 8 times [2024-11-08 17:07:05,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:05,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133902621] [2024-11-08 17:07:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:05,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 32 proven. 105 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-08 17:07:06,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:06,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133902621] [2024-11-08 17:07:06,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133902621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:07:06,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576535771] [2024-11-08 17:07:06,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:07:06,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:06,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:07:06,474 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:07:06,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-08 17:07:06,797 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:07:06,797 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:07:06,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-08 17:07:06,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:07:07,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:07:08,272 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:07:08,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:07:08,275 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 10 [2024-11-08 17:07:08,330 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 18 proven. 120 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 17:07:08,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:07:09,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:07:09,206 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 24 treesize of output 20 [2024-11-08 17:07:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 18 proven. 120 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 17:07:10,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576535771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:07:10,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:07:10,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 20] total 52 [2024-11-08 17:07:10,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420676745] [2024-11-08 17:07:10,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:07:10,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-08 17:07:10,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:10,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-08 17:07:10,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2522, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 17:07:10,430 INFO L87 Difference]: Start difference. First operand 440 states and 474 transitions. Second operand has 52 states, 52 states have (on average 3.730769230769231) internal successors, (194), 52 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:15,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:15,021 INFO L93 Difference]: Finished difference Result 601 states and 635 transitions. [2024-11-08 17:07:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-08 17:07:15,022 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.730769230769231) internal successors, (194), 52 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-08 17:07:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:15,023 INFO L225 Difference]: With dead ends: 601 [2024-11-08 17:07:15,023 INFO L226 Difference]: Without dead ends: 437 [2024-11-08 17:07:15,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=288, Invalid=5874, Unknown=0, NotChecked=0, Total=6162 [2024-11-08 17:07:15,024 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 29 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 3300 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:15,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1541 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3300 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-08 17:07:15,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-08 17:07:15,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 428. [2024-11-08 17:07:15,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 424 states have (on average 1.0872641509433962) internal successors, (461), 427 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 461 transitions. [2024-11-08 17:07:15,033 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 461 transitions. Word has length 86 [2024-11-08 17:07:15,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:15,034 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 461 transitions. [2024-11-08 17:07:15,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.730769230769231) internal successors, (194), 52 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:15,034 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 461 transitions. [2024-11-08 17:07:15,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 17:07:15,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:15,036 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:15,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-08 17:07:15,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-08 17:07:15,237 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:07:15,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:15,237 INFO L85 PathProgramCache]: Analyzing trace with hash 808852522, now seen corresponding path program 10 times [2024-11-08 17:07:15,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:15,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867603287] [2024-11-08 17:07:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:15,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 277 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:07:17,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:17,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867603287] [2024-11-08 17:07:17,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867603287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:07:17,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282142862] [2024-11-08 17:07:17,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:07:17,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:17,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:07:17,948 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:07:17,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-08 17:07:18,328 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:07:18,328 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:07:18,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-08 17:07:18,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:07:19,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:07:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 64 proven. 206 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 17:07:20,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:07:20,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:07:20,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:07:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 64 proven. 206 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 17:07:20,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282142862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:07:20,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:07:20,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 54 [2024-11-08 17:07:20,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324667986] [2024-11-08 17:07:20,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:07:20,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-08 17:07:20,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:20,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-08 17:07:20,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=2744, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 17:07:20,507 INFO L87 Difference]: Start difference. First operand 428 states and 461 transitions. Second operand has 54 states, 54 states have (on average 3.314814814814815) internal successors, (179), 54 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:29,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:29,766 INFO L93 Difference]: Finished difference Result 748 states and 797 transitions. [2024-11-08 17:07:29,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-08 17:07:29,767 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.314814814814815) internal successors, (179), 54 states have internal predecessors, (179), 0 states have call successors, (0), 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 91 [2024-11-08 17:07:29,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:29,769 INFO L225 Difference]: With dead ends: 748 [2024-11-08 17:07:29,769 INFO L226 Difference]: Without dead ends: 590 [2024-11-08 17:07:29,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=342, Invalid=6630, Unknown=0, NotChecked=0, Total=6972 [2024-11-08 17:07:29,770 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 212 mSDsluCounter, 4173 mSDsCounter, 0 mSdLazyCounter, 6816 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 4268 SdHoareTripleChecker+Invalid, 6859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 6816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:29,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 4268 Invalid, 6859 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 6816 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-08 17:07:29,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-08 17:07:29,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 548. [2024-11-08 17:07:29,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 544 states have (on average 1.1213235294117647) internal successors, (610), 547 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 610 transitions. [2024-11-08 17:07:29,783 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 610 transitions. Word has length 91 [2024-11-08 17:07:29,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:29,783 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 610 transitions. [2024-11-08 17:07:29,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.314814814814815) internal successors, (179), 54 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:29,784 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 610 transitions. [2024-11-08 17:07:29,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 17:07:29,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:29,786 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:29,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-08 17:07:29,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:29,987 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:07:29,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:29,987 INFO L85 PathProgramCache]: Analyzing trace with hash -487905262, now seen corresponding path program 9 times [2024-11-08 17:07:29,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:29,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482988611] [2024-11-08 17:07:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:29,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 28 proven. 131 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 17:07:30,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:30,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482988611] [2024-11-08 17:07:30,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482988611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:07:30,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497797715] [2024-11-08 17:07:30,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:07:30,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:30,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:07:30,956 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:07:30,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-08 17:07:31,809 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-08 17:07:31,809 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:07:31,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-08 17:07:31,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:07:31,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:07:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 50 proven. 109 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 17:07:32,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:07:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 50 proven. 109 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 17:07:33,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497797715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:07:33,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:07:33,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2024-11-08 17:07:33,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482331901] [2024-11-08 17:07:33,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:07:33,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 17:07:33,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:33,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 17:07:33,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=2410, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 17:07:33,749 INFO L87 Difference]: Start difference. First operand 548 states and 610 transitions. Second operand has 53 states, 52 states have (on average 4.115384615384615) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:34,971 INFO L93 Difference]: Finished difference Result 553 states and 610 transitions. [2024-11-08 17:07:34,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 17:07:34,972 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 4.115384615384615) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 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 94 [2024-11-08 17:07:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:34,974 INFO L225 Difference]: With dead ends: 553 [2024-11-08 17:07:34,974 INFO L226 Difference]: Without dead ends: 553 [2024-11-08 17:07:34,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=452, Invalid=3088, Unknown=0, NotChecked=0, Total=3540 [2024-11-08 17:07:34,975 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 117 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:34,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 711 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 17:07:34,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-11-08 17:07:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 548. [2024-11-08 17:07:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 544 states have (on average 1.1139705882352942) internal successors, (606), 547 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:34,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 606 transitions. [2024-11-08 17:07:34,986 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 606 transitions. Word has length 94 [2024-11-08 17:07:34,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:34,987 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 606 transitions. [2024-11-08 17:07:34,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 4.115384615384615) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:34,988 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 606 transitions. [2024-11-08 17:07:34,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-08 17:07:34,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:34,990 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:35,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-08 17:07:35,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:35,191 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:07:35,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:35,192 INFO L85 PathProgramCache]: Analyzing trace with hash -203938958, now seen corresponding path program 11 times [2024-11-08 17:07:35,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:35,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117776544] [2024-11-08 17:07:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:35,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:07:37,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:37,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117776544] [2024-11-08 17:07:37,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117776544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:07:37,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309325917] [2024-11-08 17:07:37,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:07:37,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:37,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:07:37,927 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:07:37,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-08 17:07:38,318 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-08 17:07:38,318 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:07:38,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-08 17:07:38,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:07:39,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:07:40,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-08 17:07:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 45 proven. 263 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:07:40,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:07:40,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:07:40,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:07:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 45 proven. 263 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:07:40,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309325917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:07:40,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:07:40,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 27] total 58 [2024-11-08 17:07:40,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342023972] [2024-11-08 17:07:40,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:07:40,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-08 17:07:40,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:40,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-08 17:07:40,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=3179, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 17:07:40,798 INFO L87 Difference]: Start difference. First operand 548 states and 606 transitions. Second operand has 58 states, 58 states have (on average 3.310344827586207) internal successors, (192), 58 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:51,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:51,910 INFO L93 Difference]: Finished difference Result 856 states and 918 transitions. [2024-11-08 17:07:51,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-08 17:07:51,911 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.310344827586207) internal successors, (192), 58 states have internal predecessors, (192), 0 states have call successors, (0), 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 95 [2024-11-08 17:07:51,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:51,913 INFO L225 Difference]: With dead ends: 856 [2024-11-08 17:07:51,913 INFO L226 Difference]: Without dead ends: 703 [2024-11-08 17:07:51,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=385, Invalid=7805, Unknown=0, NotChecked=0, Total=8190 [2024-11-08 17:07:51,915 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 219 mSDsluCounter, 4847 mSDsCounter, 0 mSdLazyCounter, 8053 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 4948 SdHoareTripleChecker+Invalid, 8098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 8053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:51,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 4948 Invalid, 8098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 8053 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-08 17:07:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-08 17:07:51,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 648. [2024-11-08 17:07:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 644 states have (on average 1.1180124223602483) internal successors, (720), 647 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:51,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 720 transitions. [2024-11-08 17:07:51,928 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 720 transitions. Word has length 95 [2024-11-08 17:07:51,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:51,929 INFO L471 AbstractCegarLoop]: Abstraction has 648 states and 720 transitions. [2024-11-08 17:07:51,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.310344827586207) internal successors, (192), 58 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:51,929 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 720 transitions. [2024-11-08 17:07:51,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-08 17:07:51,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:51,931 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:51,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-08 17:07:52,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:52,132 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:07:52,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:52,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2054806074, now seen corresponding path program 6 times [2024-11-08 17:07:52,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:52,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623974558] [2024-11-08 17:07:52,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:52,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 28 proven. 137 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 17:07:53,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:53,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623974558] [2024-11-08 17:07:53,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623974558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:07:53,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447457150] [2024-11-08 17:07:53,250 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:07:53,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:53,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:07:53,251 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:07:53,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-08 17:07:54,725 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-08 17:07:54,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:07:54,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-08 17:07:54,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:07:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 50 proven. 115 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 17:07:55,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:07:56,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-08 17:07:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 50 proven. 115 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 17:07:56,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447457150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:07:56,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:07:56,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 46 [2024-11-08 17:07:56,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414789239] [2024-11-08 17:07:56,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:07:56,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-08 17:07:56,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:56,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-08 17:07:56,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1878, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 17:07:56,297 INFO L87 Difference]: Start difference. First operand 648 states and 720 transitions. Second operand has 47 states, 46 states have (on average 4.0) internal successors, (184), 47 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:57,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:57,418 INFO L93 Difference]: Finished difference Result 669 states and 733 transitions. [2024-11-08 17:07:57,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 17:07:57,418 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 4.0) internal successors, (184), 47 states have internal predecessors, (184), 0 states have call successors, (0), 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 95 [2024-11-08 17:07:57,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:57,420 INFO L225 Difference]: With dead ends: 669 [2024-11-08 17:07:57,420 INFO L226 Difference]: Without dead ends: 666 [2024-11-08 17:07:57,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 155 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=392, Invalid=2578, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 17:07:57,421 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 62 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:57,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 876 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 17:07:57,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-11-08 17:07:57,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 651. [2024-11-08 17:07:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 647 states have (on average 1.1035548686244203) internal successors, (714), 650 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 714 transitions. [2024-11-08 17:07:57,433 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 714 transitions. Word has length 95 [2024-11-08 17:07:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:57,433 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 714 transitions. [2024-11-08 17:07:57,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 4.0) internal successors, (184), 47 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:07:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 714 transitions. [2024-11-08 17:07:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-08 17:07:57,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:57,436 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:57,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-08 17:07:57,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-11-08 17:07:57,638 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:07:57,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:57,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1480232695, now seen corresponding path program 2 times [2024-11-08 17:07:57,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:57,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909559798] [2024-11-08 17:07:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:57,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 28 proven. 125 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 17:07:58,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:58,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909559798] [2024-11-08 17:07:58,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909559798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:07:58,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583226170] [2024-11-08 17:07:58,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:07:58,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:58,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:07:58,851 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:07:58,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-08 17:07:59,215 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:07:59,215 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:07:59,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-08 17:07:59,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:07:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 45 proven. 108 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 17:07:59,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:08:00,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-08 17:08:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 45 proven. 108 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 17:08:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583226170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:08:00,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:08:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2024-11-08 17:08:00,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327527369] [2024-11-08 17:08:00,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:08:00,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 17:08:00,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:08:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 17:08:00,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1314, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 17:08:00,834 INFO L87 Difference]: Start difference. First operand 651 states and 714 transitions. Second operand has 39 states, 38 states have (on average 4.157894736842105) internal successors, (158), 39 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:08:02,281 INFO L93 Difference]: Finished difference Result 655 states and 717 transitions. [2024-11-08 17:08:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 17:08:02,282 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 4.157894736842105) internal successors, (158), 39 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-11-08 17:08:02,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:08:02,284 INFO L225 Difference]: With dead ends: 655 [2024-11-08 17:08:02,284 INFO L226 Difference]: Without dead ends: 650 [2024-11-08 17:08:02,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 168 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=230, Invalid=1840, Unknown=0, NotChecked=0, Total=2070 [2024-11-08 17:08:02,285 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 94 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:08:02,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 916 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 17:08:02,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2024-11-08 17:08:02,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 648. [2024-11-08 17:08:02,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 644 states have (on average 1.1024844720496894) internal successors, (710), 647 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:02,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 710 transitions. [2024-11-08 17:08:02,297 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 710 transitions. Word has length 98 [2024-11-08 17:08:02,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:08:02,298 INFO L471 AbstractCegarLoop]: Abstraction has 648 states and 710 transitions. [2024-11-08 17:08:02,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 4.157894736842105) internal successors, (158), 39 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:02,298 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 710 transitions. [2024-11-08 17:08:02,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 17:08:02,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:08:02,300 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:08:02,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-08 17:08:02,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-11-08 17:08:02,501 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:08:02,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:08:02,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2098546362, now seen corresponding path program 12 times [2024-11-08 17:08:02,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:08:02,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022701873] [2024-11-08 17:08:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:02,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:08:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 20 proven. 327 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:08:04,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:08:04,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022701873] [2024-11-08 17:08:04,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022701873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:08:04,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351836132] [2024-11-08 17:08:04,003 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:08:04,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:04,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:04,005 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:08:04,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-08 17:08:04,499 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-08 17:08:04,499 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:08:04,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-08 17:08:04,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:08:05,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:08:05,329 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 20 proven. 327 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:08:05,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:08:05,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:08:05,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:08:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 20 proven. 327 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:08:05,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351836132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:08:05,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:08:05,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 47 [2024-11-08 17:08:05,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165238626] [2024-11-08 17:08:05,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:08:05,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-08 17:08:05,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:08:05,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-08 17:08:05,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=2041, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 17:08:05,614 INFO L87 Difference]: Start difference. First operand 648 states and 710 transitions. Second operand has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 47 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:08,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:08:08,016 INFO L93 Difference]: Finished difference Result 933 states and 1012 transitions. [2024-11-08 17:08:08,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-08 17:08:08,017 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 47 states have internal predecessors, (159), 0 states have call successors, (0), 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 99 [2024-11-08 17:08:08,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:08:08,018 INFO L225 Difference]: With dead ends: 933 [2024-11-08 17:08:08,019 INFO L226 Difference]: Without dead ends: 778 [2024-11-08 17:08:08,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=176, Invalid=3016, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 17:08:08,019 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 112 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 3066 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 3688 SdHoareTripleChecker+Invalid, 3086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:08:08,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 3688 Invalid, 3086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 3066 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 17:08:08,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2024-11-08 17:08:08,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 758. [2024-11-08 17:08:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 754 states have (on average 1.110079575596817) internal successors, (837), 757 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:08,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 837 transitions. [2024-11-08 17:08:08,034 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 837 transitions. Word has length 99 [2024-11-08 17:08:08,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:08:08,034 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 837 transitions. [2024-11-08 17:08:08,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 47 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 837 transitions. [2024-11-08 17:08:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 17:08:08,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:08:08,037 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:08:08,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-08 17:08:08,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-08 17:08:08,238 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:08:08,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:08:08,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1724457845, now seen corresponding path program 10 times [2024-11-08 17:08:08,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:08:08,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22476137] [2024-11-08 17:08:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:08,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:08:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 38 proven. 153 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-08 17:08:08,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:08:08,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22476137] [2024-11-08 17:08:08,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22476137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:08:08,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238023964] [2024-11-08 17:08:08,859 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:08:08,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:08,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:08,860 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:08:08,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-08 17:08:10,408 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:08:10,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:08:10,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-08 17:08:10,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:08:10,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:08:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 21 proven. 171 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 17:08:11,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:08:11,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:08:11,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:08:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 21 proven. 171 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 17:08:11,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238023964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:08:11,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:08:11,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 21] total 40 [2024-11-08 17:08:11,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858652388] [2024-11-08 17:08:11,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:08:11,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 17:08:11,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:08:11,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 17:08:11,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1474, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 17:08:11,657 INFO L87 Difference]: Start difference. First operand 758 states and 837 transitions. Second operand has 40 states, 40 states have (on average 3.9) internal successors, (156), 40 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:08:14,906 INFO L93 Difference]: Finished difference Result 1019 states and 1097 transitions. [2024-11-08 17:08:14,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-08 17:08:14,907 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.9) internal successors, (156), 40 states have internal predecessors, (156), 0 states have call successors, (0), 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 99 [2024-11-08 17:08:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:08:14,909 INFO L225 Difference]: With dead ends: 1019 [2024-11-08 17:08:14,910 INFO L226 Difference]: Without dead ends: 830 [2024-11-08 17:08:14,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=230, Invalid=4600, Unknown=0, NotChecked=0, Total=4830 [2024-11-08 17:08:14,911 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 35 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 3203 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 3214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:08:14,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1433 Invalid, 3214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3203 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 17:08:14,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2024-11-08 17:08:14,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 815. [2024-11-08 17:08:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 811 states have (on average 1.0998766954377313) internal successors, (892), 814 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 892 transitions. [2024-11-08 17:08:14,924 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 892 transitions. Word has length 99 [2024-11-08 17:08:14,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:08:14,924 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 892 transitions. [2024-11-08 17:08:14,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.9) internal successors, (156), 40 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:14,925 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 892 transitions. [2024-11-08 17:08:14,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 17:08:14,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:08:14,927 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:08:14,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-08 17:08:15,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-11-08 17:08:15,128 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:08:15,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:08:15,128 INFO L85 PathProgramCache]: Analyzing trace with hash 285181442, now seen corresponding path program 13 times [2024-11-08 17:08:15,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:08:15,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108951546] [2024-11-08 17:08:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:15,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:08:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 153 proven. 235 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:08:16,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:08:16,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108951546] [2024-11-08 17:08:16,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108951546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:08:16,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337257596] [2024-11-08 17:08:16,670 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 17:08:16,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:16,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:16,673 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:08:16,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-08 17:08:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:17,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-08 17:08:17,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:08:17,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:08:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 190 proven. 198 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:08:17,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:08:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 190 proven. 198 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:08:20,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337257596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:08:20,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:08:20,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 70 [2024-11-08 17:08:20,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617417376] [2024-11-08 17:08:20,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:08:20,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-08 17:08:20,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:08:20,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-08 17:08:20,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=4374, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 17:08:20,080 INFO L87 Difference]: Start difference. First operand 815 states and 892 transitions. Second operand has 71 states, 70 states have (on average 3.742857142857143) internal successors, (262), 71 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:08:23,545 INFO L93 Difference]: Finished difference Result 872 states and 948 transitions. [2024-11-08 17:08:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-08 17:08:23,546 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 3.742857142857143) internal successors, (262), 71 states have internal predecessors, (262), 0 states have call successors, (0), 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 103 [2024-11-08 17:08:23,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:08:23,548 INFO L225 Difference]: With dead ends: 872 [2024-11-08 17:08:23,548 INFO L226 Difference]: Without dead ends: 872 [2024-11-08 17:08:23,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2008 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=745, Invalid=6061, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 17:08:23,549 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 258 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 3573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:08:23,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1900 Invalid, 3573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-08 17:08:23,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-11-08 17:08:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 842. [2024-11-08 17:08:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 838 states have (on average 1.1109785202863962) internal successors, (931), 841 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:23,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 931 transitions. [2024-11-08 17:08:23,559 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 931 transitions. Word has length 103 [2024-11-08 17:08:23,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:08:23,559 INFO L471 AbstractCegarLoop]: Abstraction has 842 states and 931 transitions. [2024-11-08 17:08:23,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 3.742857142857143) internal successors, (262), 71 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:23,559 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 931 transitions. [2024-11-08 17:08:23,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-08 17:08:23,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:08:23,562 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:08:23,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-08 17:08:23,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-08 17:08:23,762 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:08:23,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:08:23,763 INFO L85 PathProgramCache]: Analyzing trace with hash 395074543, now seen corresponding path program 14 times [2024-11-08 17:08:23,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:08:23,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132652162] [2024-11-08 17:08:23,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:23,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:08:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 22 proven. 398 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:08:25,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:08:25,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132652162] [2024-11-08 17:08:25,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132652162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:08:25,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921546205] [2024-11-08 17:08:25,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:08:25,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:25,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:25,300 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:08:25,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-08 17:08:25,658 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:08:25,658 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:08:25,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-11-08 17:08:25,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:08:26,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:08:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 22 proven. 398 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:08:26,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:08:26,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:08:26,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:08:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 22 proven. 398 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:08:27,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921546205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:08:27,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:08:27,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 50 [2024-11-08 17:08:27,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149699210] [2024-11-08 17:08:27,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:08:27,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-08 17:08:27,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:08:27,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-08 17:08:27,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=2322, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 17:08:27,072 INFO L87 Difference]: Start difference. First operand 842 states and 931 transitions. Second operand has 50 states, 50 states have (on average 3.42) internal successors, (171), 50 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:30,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:08:30,314 INFO L93 Difference]: Finished difference Result 1167 states and 1274 transitions. [2024-11-08 17:08:30,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-08 17:08:30,315 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.42) internal successors, (171), 50 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-08 17:08:30,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:08:30,318 INFO L225 Difference]: With dead ends: 1167 [2024-11-08 17:08:30,318 INFO L226 Difference]: Without dead ends: 969 [2024-11-08 17:08:30,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=188, Invalid=3472, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 17:08:30,318 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 121 mSDsluCounter, 4845 mSDsCounter, 0 mSdLazyCounter, 4081 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 4969 SdHoareTripleChecker+Invalid, 4102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:08:30,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 4969 Invalid, 4102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 4081 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-08 17:08:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2024-11-08 17:08:30,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 938. [2024-11-08 17:08:30,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 934 states have (on average 1.1156316916488223) internal successors, (1042), 937 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1042 transitions. [2024-11-08 17:08:30,329 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1042 transitions. Word has length 106 [2024-11-08 17:08:30,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:08:30,329 INFO L471 AbstractCegarLoop]: Abstraction has 938 states and 1042 transitions. [2024-11-08 17:08:30,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.42) internal successors, (171), 50 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:30,330 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1042 transitions. [2024-11-08 17:08:30,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 17:08:30,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:08:30,332 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:08:30,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-08 17:08:30,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-11-08 17:08:30,533 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:08:30,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:08:30,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1592060837, now seen corresponding path program 11 times [2024-11-08 17:08:30,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:08:30,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928690202] [2024-11-08 17:08:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:30,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:08:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 45 proven. 172 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-08 17:08:31,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:08:31,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928690202] [2024-11-08 17:08:31,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928690202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:08:31,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046018016] [2024-11-08 17:08:31,783 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:08:31,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:31,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:31,785 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:08:31,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-08 17:08:34,524 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-08 17:08:34,524 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:08:34,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-08 17:08:34,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:08:34,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:08:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 66 proven. 151 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-08 17:08:35,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:08:37,125 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 66 proven. 151 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-08 17:08:37,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046018016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:08:37,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:08:37,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 48 [2024-11-08 17:08:37,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111835840] [2024-11-08 17:08:37,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:08:37,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 17:08:37,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:08:37,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 17:08:37,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=2032, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 17:08:37,127 INFO L87 Difference]: Start difference. First operand 938 states and 1042 transitions. Second operand has 49 states, 48 states have (on average 4.291666666666667) internal successors, (206), 49 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:38,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:08:38,865 INFO L93 Difference]: Finished difference Result 942 states and 1039 transitions. [2024-11-08 17:08:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 17:08:38,866 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 4.291666666666667) internal successors, (206), 49 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-08 17:08:38,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:08:38,869 INFO L225 Difference]: With dead ends: 942 [2024-11-08 17:08:38,869 INFO L226 Difference]: Without dead ends: 942 [2024-11-08 17:08:38,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=402, Invalid=2790, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 17:08:38,870 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 144 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:08:38,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1039 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 17:08:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-11-08 17:08:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 938. [2024-11-08 17:08:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 934 states have (on average 1.1092077087794432) internal successors, (1036), 937 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1036 transitions. [2024-11-08 17:08:38,885 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1036 transitions. Word has length 107 [2024-11-08 17:08:38,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:08:38,885 INFO L471 AbstractCegarLoop]: Abstraction has 938 states and 1036 transitions. [2024-11-08 17:08:38,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 4.291666666666667) internal successors, (206), 49 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:38,886 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1036 transitions. [2024-11-08 17:08:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-08 17:08:38,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:08:38,888 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:08:38,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-08 17:08:39,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-08 17:08:39,088 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:08:39,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:08:39,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2109245679, now seen corresponding path program 7 times [2024-11-08 17:08:39,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:08:39,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842933524] [2024-11-08 17:08:39,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:39,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:08:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 45 proven. 179 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-08 17:08:40,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:08:40,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842933524] [2024-11-08 17:08:40,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842933524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:08:40,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508216803] [2024-11-08 17:08:40,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 17:08:40,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:40,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:40,015 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:08:40,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-08 17:08:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:40,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-08 17:08:40,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:08:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 66 proven. 158 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-08 17:08:40,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:08:41,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-08 17:08:41,837 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 66 proven. 158 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-08 17:08:41,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508216803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:08:41,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:08:41,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 43 [2024-11-08 17:08:41,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188188972] [2024-11-08 17:08:41,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:08:41,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 17:08:41,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:08:41,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 17:08:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1677, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 17:08:41,840 INFO L87 Difference]: Start difference. First operand 938 states and 1036 transitions. Second operand has 44 states, 43 states have (on average 4.0) internal successors, (172), 44 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:43,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:08:43,279 INFO L93 Difference]: Finished difference Result 965 states and 1053 transitions. [2024-11-08 17:08:43,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 17:08:43,279 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 4.0) internal successors, (172), 44 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-08 17:08:43,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:08:43,281 INFO L225 Difference]: With dead ends: 965 [2024-11-08 17:08:43,282 INFO L226 Difference]: Without dead ends: 962 [2024-11-08 17:08:43,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 185 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=300, Invalid=2456, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 17:08:43,282 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 59 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:08:43,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 991 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 17:08:43,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-11-08 17:08:43,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 938. [2024-11-08 17:08:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 934 states have (on average 1.0963597430406853) internal successors, (1024), 937 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1024 transitions. [2024-11-08 17:08:43,291 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1024 transitions. Word has length 108 [2024-11-08 17:08:43,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:08:43,292 INFO L471 AbstractCegarLoop]: Abstraction has 938 states and 1024 transitions. [2024-11-08 17:08:43,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 4.0) internal successors, (172), 44 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:08:43,292 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1024 transitions. [2024-11-08 17:08:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-08 17:08:43,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:08:43,293 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:08:43,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-08 17:08:43,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:43,494 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:08:43,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:08:43,494 INFO L85 PathProgramCache]: Analyzing trace with hash -910042201, now seen corresponding path program 15 times [2024-11-08 17:08:43,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:08:43,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994363805] [2024-11-08 17:08:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:43,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:08:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 190 proven. 275 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:08:45,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:08:45,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994363805] [2024-11-08 17:08:45,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994363805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:08:45,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379820305] [2024-11-08 17:08:45,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:08:45,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:45,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:45,005 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:08:45,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-08 17:08:45,715 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-08 17:08:45,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:08:45,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-08 17:08:45,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:08:46,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-08 17:09:14,062 INFO L349 Elim1Store]: treesize reduction 12, result has 88.1 percent of original size [2024-11-08 17:09:14,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 107 [2024-11-08 17:09:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 220 proven. 209 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 17:09:14,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:09:24,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 47 [2024-11-08 17:09:24,751 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:09:24,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 127 [2024-11-08 17:09:24,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:09:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 78 proven. 351 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 17:09:26,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379820305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:09:26,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:09:26,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 34, 34] total 95 [2024-11-08 17:09:26,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235726549] [2024-11-08 17:09:26,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:09:26,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-08 17:09:26,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:26,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-08 17:09:26,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1070, Invalid=8044, Unknown=6, NotChecked=0, Total=9120 [2024-11-08 17:09:26,043 INFO L87 Difference]: Start difference. First operand 938 states and 1024 transitions. Second operand has 96 states, 95 states have (on average 3.042105263157895) internal successors, (289), 96 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:35,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:09:53,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:09:55,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:10:00,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:10:13,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:10:22,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:10:38,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:10:39,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:10:57,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:11:03,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:11:03,103 INFO L93 Difference]: Finished difference Result 1038 states and 1111 transitions. [2024-11-08 17:11:03,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-08 17:11:03,104 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 3.042105263157895) internal successors, (289), 96 states have internal predecessors, (289), 0 states have call successors, (0), 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 110 [2024-11-08 17:11:03,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:11:03,106 INFO L225 Difference]: With dead ends: 1038 [2024-11-08 17:11:03,106 INFO L226 Difference]: Without dead ends: 907 [2024-11-08 17:11:03,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10446 ImplicationChecksByTransitivity, 110.2s TimeCoverageRelationStatistics Valid=3784, Invalid=32877, Unknown=11, NotChecked=0, Total=36672 [2024-11-08 17:11:03,108 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 702 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 3660 mSolverCounterSat, 131 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 3799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 3660 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:11:03,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 2015 Invalid, 3799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 3660 Invalid, 8 Unknown, 0 Unchecked, 23.3s Time] [2024-11-08 17:11:03,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2024-11-08 17:11:03,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 849. [2024-11-08 17:11:03,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 845 states have (on average 1.1017751479289941) internal successors, (931), 848 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 931 transitions. [2024-11-08 17:11:03,118 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 931 transitions. Word has length 110 [2024-11-08 17:11:03,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:11:03,119 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 931 transitions. [2024-11-08 17:11:03,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 3.042105263157895) internal successors, (289), 96 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 931 transitions. [2024-11-08 17:11:03,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:11:03,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:11:03,122 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:03,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-08 17:11:03,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2024-11-08 17:11:03,323 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:11:03,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1800653342, now seen corresponding path program 12 times [2024-11-08 17:11:03,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:03,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043396287] [2024-11-08 17:11:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:03,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 44 proven. 210 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-08 17:11:04,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:04,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043396287] [2024-11-08 17:11:04,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043396287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:11:04,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526951198] [2024-11-08 17:11:04,015 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:11:04,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:04,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:11:04,017 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:11:04,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-08 17:11:07,131 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-08 17:11:07,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:11:07,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 142 conjuncts are in the unsatisfiable core [2024-11-08 17:11:07,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:11:07,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:11:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 24 proven. 231 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-08 17:11:08,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:11:09,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:11:09,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:11:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 24 proven. 231 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-08 17:11:10,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526951198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:11:10,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:11:10,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 62 [2024-11-08 17:11:10,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681193537] [2024-11-08 17:11:10,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:11:10,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-08 17:11:10,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:10,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-08 17:11:10,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=3631, Unknown=0, NotChecked=0, Total=3782 [2024-11-08 17:11:10,661 INFO L87 Difference]: Start difference. First operand 849 states and 931 transitions. Second operand has 62 states, 62 states have (on average 4.0) internal successors, (248), 62 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:15,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:11:15,584 INFO L93 Difference]: Finished difference Result 1141 states and 1220 transitions. [2024-11-08 17:11:15,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-08 17:11:15,585 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.0) internal successors, (248), 62 states have internal predecessors, (248), 0 states have call successors, (0), 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 112 [2024-11-08 17:11:15,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:11:15,587 INFO L225 Difference]: With dead ends: 1141 [2024-11-08 17:11:15,587 INFO L226 Difference]: Without dead ends: 843 [2024-11-08 17:11:15,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=346, Invalid=8774, Unknown=0, NotChecked=0, Total=9120 [2024-11-08 17:11:15,587 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 35 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 4587 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 4602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:11:15,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1944 Invalid, 4602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4587 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 17:11:15,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2024-11-08 17:11:15,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 828. [2024-11-08 17:11:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 824 states have (on average 1.0995145631067962) internal successors, (906), 827 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:15,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 906 transitions. [2024-11-08 17:11:15,595 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 906 transitions. Word has length 112 [2024-11-08 17:11:15,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:11:15,596 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 906 transitions. [2024-11-08 17:11:15,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.0) internal successors, (248), 62 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:15,596 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 906 transitions. [2024-11-08 17:11:15,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-08 17:11:15,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:11:15,597 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:15,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-08 17:11:15,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2024-11-08 17:11:15,797 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:11:15,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:15,798 INFO L85 PathProgramCache]: Analyzing trace with hash 577802258, now seen corresponding path program 13 times [2024-11-08 17:11:15,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:15,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468755422] [2024-11-08 17:11:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:15,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 66 proven. 218 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 17:11:17,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:17,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468755422] [2024-11-08 17:11:17,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468755422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:11:17,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394026381] [2024-11-08 17:11:17,227 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 17:11:17,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:17,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:11:17,228 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:11:17,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-08 17:11:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:17,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-08 17:11:17,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:11:17,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:11:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 91 proven. 193 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 17:11:18,318 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:11:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 91 proven. 193 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 17:11:19,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394026381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:11:19,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:11:19,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 55 [2024-11-08 17:11:19,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488839135] [2024-11-08 17:11:19,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:11:19,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-08 17:11:19,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-08 17:11:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=2718, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 17:11:19,932 INFO L87 Difference]: Start difference. First operand 828 states and 906 transitions. Second operand has 56 states, 55 states have (on average 4.1454545454545455) internal successors, (228), 56 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:22,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:11:22,213 INFO L93 Difference]: Finished difference Result 832 states and 904 transitions. [2024-11-08 17:11:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 17:11:22,214 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 4.1454545454545455) internal successors, (228), 56 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-11-08 17:11:22,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:11:22,215 INFO L225 Difference]: With dead ends: 832 [2024-11-08 17:11:22,215 INFO L226 Difference]: Without dead ends: 832 [2024-11-08 17:11:22,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=461, Invalid=3699, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 17:11:22,216 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 149 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 2321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:11:22,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1498 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 17:11:22,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2024-11-08 17:11:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 828. [2024-11-08 17:11:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 824 states have (on average 1.0934466019417475) internal successors, (901), 827 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 901 transitions. [2024-11-08 17:11:22,223 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 901 transitions. Word has length 120 [2024-11-08 17:11:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:11:22,224 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 901 transitions. [2024-11-08 17:11:22,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 4.1454545454545455) internal successors, (228), 56 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 901 transitions. [2024-11-08 17:11:22,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-08 17:11:22,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:11:22,226 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:22,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-08 17:11:22,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2024-11-08 17:11:22,426 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:11:22,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:22,427 INFO L85 PathProgramCache]: Analyzing trace with hash 732000826, now seen corresponding path program 8 times [2024-11-08 17:11:22,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:22,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509989375] [2024-11-08 17:11:22,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:22,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 66 proven. 226 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 17:11:23,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:23,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509989375] [2024-11-08 17:11:23,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509989375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:11:23,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447901258] [2024-11-08 17:11:23,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:11:23,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:23,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:11:23,722 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:11:23,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-08 17:11:24,085 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:11:24,085 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:11:24,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-08 17:11:24,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:11:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 91 proven. 201 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 17:11:24,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:11:25,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-08 17:11:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 91 proven. 201 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 17:11:25,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447901258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:11:25,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:11:25,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 47 [2024-11-08 17:11:25,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385585012] [2024-11-08 17:11:25,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:11:25,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-08 17:11:25,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:25,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-08 17:11:25,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=2001, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 17:11:25,687 INFO L87 Difference]: Start difference. First operand 828 states and 901 transitions. Second operand has 48 states, 47 states have (on average 4.042553191489362) internal successors, (190), 48 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:27,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:11:27,308 INFO L93 Difference]: Finished difference Result 852 states and 918 transitions. [2024-11-08 17:11:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 17:11:27,308 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.042553191489362) internal successors, (190), 48 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-11-08 17:11:27,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:11:27,311 INFO L225 Difference]: With dead ends: 852 [2024-11-08 17:11:27,311 INFO L226 Difference]: Without dead ends: 849 [2024-11-08 17:11:27,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 208 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=354, Invalid=2952, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 17:11:27,311 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 96 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:11:27,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1250 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 17:11:27,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-08 17:11:27,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 828. [2024-11-08 17:11:27,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 824 states have (on average 1.0813106796116505) internal successors, (891), 827 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:27,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 891 transitions. [2024-11-08 17:11:27,318 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 891 transitions. Word has length 121 [2024-11-08 17:11:27,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:11:27,319 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 891 transitions. [2024-11-08 17:11:27,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.042553191489362) internal successors, (190), 48 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:27,319 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 891 transitions. [2024-11-08 17:11:27,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-08 17:11:27,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:11:27,320 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 12, 12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:27,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-08 17:11:27,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:27,521 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:11:27,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:27,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2010407449, now seen corresponding path program 16 times [2024-11-08 17:11:27,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:27,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245924979] [2024-11-08 17:11:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:27,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 0 proven. 623 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:11:31,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:31,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245924979] [2024-11-08 17:11:31,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245924979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:11:31,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511967663] [2024-11-08 17:11:31,116 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:11:31,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:31,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:11:31,117 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:11:31,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-08 17:11:31,710 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:11:31,710 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:11:31,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 150 conjuncts are in the unsatisfiable core [2024-11-08 17:11:31,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:11:33,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:11:34,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-08 17:11:34,956 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 132 proven. 476 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 17:11:34,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:11:35,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:11:35,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:11:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 132 proven. 476 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 17:11:35,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511967663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:11:35,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:11:35,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 33, 33] total 72 [2024-11-08 17:11:35,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163704033] [2024-11-08 17:11:35,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:11:35,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-08 17:11:35,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:35,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-08 17:11:35,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=4956, Unknown=0, NotChecked=0, Total=5112 [2024-11-08 17:11:35,562 INFO L87 Difference]: Start difference. First operand 828 states and 891 transitions. Second operand has 72 states, 72 states have (on average 3.3333333333333335) internal successors, (240), 72 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:50,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:11:50,503 INFO L93 Difference]: Finished difference Result 1315 states and 1398 transitions. [2024-11-08 17:11:50,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-08 17:11:50,504 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 3.3333333333333335) internal successors, (240), 72 states have internal predecessors, (240), 0 states have call successors, (0), 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 122 [2024-11-08 17:11:50,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:11:50,506 INFO L225 Difference]: With dead ends: 1315 [2024-11-08 17:11:50,506 INFO L226 Difference]: Without dead ends: 1054 [2024-11-08 17:11:50,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=525, Invalid=12357, Unknown=0, NotChecked=0, Total=12882 [2024-11-08 17:11:50,506 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 277 mSDsluCounter, 8139 mSDsCounter, 0 mSdLazyCounter, 13543 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 8275 SdHoareTripleChecker+Invalid, 13606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 13543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:11:50,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 8275 Invalid, 13606 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 13543 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2024-11-08 17:11:50,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2024-11-08 17:11:50,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 990. [2024-11-08 17:11:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 986 states have (on average 1.105476673427992) internal successors, (1090), 989 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1090 transitions. [2024-11-08 17:11:50,518 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1090 transitions. Word has length 122 [2024-11-08 17:11:50,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:11:50,518 INFO L471 AbstractCegarLoop]: Abstraction has 990 states and 1090 transitions. [2024-11-08 17:11:50,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 3.3333333333333335) internal successors, (240), 72 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:50,518 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1090 transitions. [2024-11-08 17:11:50,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 17:11:50,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:11:50,520 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:50,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-08 17:11:50,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:50,720 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:11:50,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:50,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1127058293, now seen corresponding path program 14 times [2024-11-08 17:11:50,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:50,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111414890] [2024-11-08 17:11:50,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:50,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 50 proven. 276 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-08 17:11:51,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:51,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111414890] [2024-11-08 17:11:51,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111414890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:11:51,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762636877] [2024-11-08 17:11:51,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:11:51,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:51,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:11:51,621 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:11:51,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-08 17:11:52,072 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:11:52,072 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:11:52,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-08 17:11:52,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:11:52,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:11:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 27 proven. 300 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 17:11:53,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:11:53,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:11:53,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:11:53,802 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 27 proven. 300 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 17:11:53,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762636877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:11:53,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:11:53,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 49 [2024-11-08 17:11:53,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463274598] [2024-11-08 17:11:53,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:11:53,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 17:11:53,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:53,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 17:11:53,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=2248, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 17:11:53,804 INFO L87 Difference]: Start difference. First operand 990 states and 1090 transitions. Second operand has 49 states, 49 states have (on average 3.9183673469387754) internal successors, (192), 49 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:58,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:11:58,517 INFO L93 Difference]: Finished difference Result 1313 states and 1410 transitions. [2024-11-08 17:11:58,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-08 17:11:58,519 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.9183673469387754) internal successors, (192), 49 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-11-08 17:11:58,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:11:58,521 INFO L225 Difference]: With dead ends: 1313 [2024-11-08 17:11:58,521 INFO L226 Difference]: Without dead ends: 980 [2024-11-08 17:11:58,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=290, Invalid=7366, Unknown=0, NotChecked=0, Total=7656 [2024-11-08 17:11:58,522 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 41 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 5111 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 5128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 5111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:11:58,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2005 Invalid, 5128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 5111 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-08 17:11:58,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-11-08 17:11:58,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 965. [2024-11-08 17:11:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 961 states have (on average 1.1040582726326742) internal successors, (1061), 964 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:58,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1061 transitions. [2024-11-08 17:11:58,530 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1061 transitions. Word has length 125 [2024-11-08 17:11:58,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:11:58,530 INFO L471 AbstractCegarLoop]: Abstraction has 965 states and 1061 transitions. [2024-11-08 17:11:58,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.9183673469387754) internal successors, (192), 49 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:11:58,530 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1061 transitions. [2024-11-08 17:11:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-08 17:11:58,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:11:58,531 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:58,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-08 17:11:58,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:58,732 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:11:58,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:58,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1872407967, now seen corresponding path program 17 times [2024-11-08 17:11:58,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:58,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258050035] [2024-11-08 17:11:58,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:58,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:12:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:12:02,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:12:02,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258050035] [2024-11-08 17:12:02,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258050035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:12:02,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417081635] [2024-11-08 17:12:02,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:12:02,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:12:02,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:12:02,312 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:12:02,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-08 17:12:02,876 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-08 17:12:02,876 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:12:02,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 164 conjuncts are in the unsatisfiable core [2024-11-08 17:12:02,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:12:04,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:12:06,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-08 17:12:06,162 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 104 proven. 561 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 17:12:06,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:12:06,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:12:06,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:12:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 104 proven. 561 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 17:12:06,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417081635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:12:06,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:12:06,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 35, 35] total 75 [2024-11-08 17:12:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970958690] [2024-11-08 17:12:06,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:12:06,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-08 17:12:06,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:12:06,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-08 17:12:06,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=5389, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 17:12:06,794 INFO L87 Difference]: Start difference. First operand 965 states and 1061 transitions. Second operand has 75 states, 75 states have (on average 3.3466666666666667) internal successors, (251), 75 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:12:26,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:12:26,006 INFO L93 Difference]: Finished difference Result 1490 states and 1594 transitions. [2024-11-08 17:12:26,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-08 17:12:26,007 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.3466666666666667) internal successors, (251), 75 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-11-08 17:12:26,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:12:26,009 INFO L225 Difference]: With dead ends: 1490 [2024-11-08 17:12:26,009 INFO L226 Difference]: Without dead ends: 1190 [2024-11-08 17:12:26,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=571, Invalid=13709, Unknown=0, NotChecked=0, Total=14280 [2024-11-08 17:12:26,010 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 332 mSDsluCounter, 9253 mSDsCounter, 0 mSdLazyCounter, 15577 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 9392 SdHoareTripleChecker+Invalid, 15645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 15577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:12:26,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 9392 Invalid, 15645 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 15577 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2024-11-08 17:12:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2024-11-08 17:12:26,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1102. [2024-11-08 17:12:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1098 states have (on average 1.1083788706739526) internal successors, (1217), 1101 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:12:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1217 transitions. [2024-11-08 17:12:26,019 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1217 transitions. Word has length 126 [2024-11-08 17:12:26,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:12:26,019 INFO L471 AbstractCegarLoop]: Abstraction has 1102 states and 1217 transitions. [2024-11-08 17:12:26,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.3466666666666667) internal successors, (251), 75 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:12:26,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1217 transitions. [2024-11-08 17:12:26,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-08 17:12:26,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:12:26,022 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:12:26,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-08 17:12:26,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:12:26,222 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:12:26,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:12:26,223 INFO L85 PathProgramCache]: Analyzing trace with hash -452255401, now seen corresponding path program 18 times [2024-11-08 17:12:26,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:12:26,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363656395] [2024-11-08 17:12:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:12:26,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:12:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:12:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 725 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:12:29,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:12:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363656395] [2024-11-08 17:12:29,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363656395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:12:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702868136] [2024-11-08 17:12:29,758 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:12:29,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:12:29,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:12:29,760 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:12:29,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-08 17:12:31,191 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-11-08 17:12:31,191 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:12:31,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-11-08 17:12:31,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:12:32,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:12:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 70 proven. 653 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:12:34,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:12:34,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:12:34,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:12:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 70 proven. 653 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:12:35,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702868136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:12:35,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:12:35,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 37, 37] total 77 [2024-11-08 17:12:35,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267573154] [2024-11-08 17:12:35,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:12:35,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-08 17:12:35,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:12:35,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-08 17:12:35,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=5687, Unknown=0, NotChecked=0, Total=5852 [2024-11-08 17:12:35,206 INFO L87 Difference]: Start difference. First operand 1102 states and 1217 transitions. Second operand has 77 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 77 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:12:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:12:52,469 INFO L93 Difference]: Finished difference Result 1640 states and 1760 transitions. [2024-11-08 17:12:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-08 17:12:52,470 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 77 states have internal predecessors, (259), 0 states have call successors, (0), 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 130 [2024-11-08 17:12:52,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:12:52,472 INFO L225 Difference]: With dead ends: 1640 [2024-11-08 17:12:52,472 INFO L226 Difference]: Without dead ends: 1337 [2024-11-08 17:12:52,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1608 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=617, Invalid=14883, Unknown=0, NotChecked=0, Total=15500 [2024-11-08 17:12:52,473 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 307 mSDsluCounter, 9774 mSDsCounter, 0 mSdLazyCounter, 16721 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 9920 SdHoareTripleChecker+Invalid, 16794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 16721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:12:52,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 9920 Invalid, 16794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 16721 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2024-11-08 17:12:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2024-11-08 17:12:52,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1245. [2024-11-08 17:12:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1241 states have (on average 1.11361804995971) internal successors, (1382), 1244 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:12:52,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1382 transitions. [2024-11-08 17:12:52,484 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1382 transitions. Word has length 130 [2024-11-08 17:12:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:12:52,485 INFO L471 AbstractCegarLoop]: Abstraction has 1245 states and 1382 transitions. [2024-11-08 17:12:52,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 77 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:12:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1382 transitions. [2024-11-08 17:12:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-08 17:12:52,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:12:52,486 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:12:52,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-11-08 17:12:52,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:12:52,688 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:12:52,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:12:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash 422496347, now seen corresponding path program 15 times [2024-11-08 17:12:52,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:12:52,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993385527] [2024-11-08 17:12:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:12:52,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:12:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:12:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 91 proven. 269 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:12:54,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:12:54,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993385527] [2024-11-08 17:12:54,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993385527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:12:54,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968197952] [2024-11-08 17:12:54,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:12:54,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:12:54,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:12:54,233 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:12:54,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-08 17:12:59,208 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-08 17:12:59,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:12:59,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-08 17:12:59,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:13:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 128 proven. 232 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:13:00,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:13:01,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-08 17:13:01,724 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 128 proven. 232 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:13:01,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968197952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:13:01,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:13:01,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 60 [2024-11-08 17:13:01,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878354251] [2024-11-08 17:13:01,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:13:01,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-08 17:13:01,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:01,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-08 17:13:01,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=3165, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 17:13:01,727 INFO L87 Difference]: Start difference. First operand 1245 states and 1382 transitions. Second operand has 61 states, 60 states have (on average 4.15) internal successors, (249), 61 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:03,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:03,595 INFO L93 Difference]: Finished difference Result 1258 states and 1389 transitions. [2024-11-08 17:13:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 17:13:03,596 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 4.15) internal successors, (249), 61 states have internal predecessors, (249), 0 states have call successors, (0), 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 133 [2024-11-08 17:13:03,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:03,599 INFO L225 Difference]: With dead ends: 1258 [2024-11-08 17:13:03,599 INFO L226 Difference]: Without dead ends: 1258 [2024-11-08 17:13:03,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 219 SyntacticMatches, 10 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1849 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=669, Invalid=4301, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 17:13:03,600 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 194 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:03,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1323 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2125 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 17:13:03,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2024-11-08 17:13:03,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1245. [2024-11-08 17:13:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1241 states have (on average 1.1079774375503626) internal successors, (1375), 1244 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1375 transitions. [2024-11-08 17:13:03,611 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1375 transitions. Word has length 133 [2024-11-08 17:13:03,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:03,612 INFO L471 AbstractCegarLoop]: Abstraction has 1245 states and 1375 transitions. [2024-11-08 17:13:03,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 4.15) internal successors, (249), 61 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1375 transitions. [2024-11-08 17:13:03,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-08 17:13:03,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:03,613 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:13:03,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-11-08 17:13:03,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-11-08 17:13:03,814 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:13:03,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:03,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2127890161, now seen corresponding path program 19 times [2024-11-08 17:13:03,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:03,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631881663] [2024-11-08 17:13:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:03,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 30 proven. 752 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:13:06,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:06,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631881663] [2024-11-08 17:13:06,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631881663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:13:06,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763316723] [2024-11-08 17:13:06,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 17:13:06,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:06,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:13:06,171 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:13:06,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-08 17:13:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:06,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 178 conjuncts are in the unsatisfiable core [2024-11-08 17:13:06,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:13:07,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:13:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 30 proven. 752 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:13:08,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:13:08,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:13:08,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:13:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 30 proven. 752 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:13:08,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763316723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:13:08,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:13:08,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 62 [2024-11-08 17:13:08,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569064921] [2024-11-08 17:13:08,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:13:08,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-08 17:13:08,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:08,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-08 17:13:08,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=3626, Unknown=0, NotChecked=0, Total=3782 [2024-11-08 17:13:08,509 INFO L87 Difference]: Start difference. First operand 1245 states and 1375 transitions. Second operand has 62 states, 62 states have (on average 3.467741935483871) internal successors, (215), 62 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:13,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:13,293 INFO L93 Difference]: Finished difference Result 1738 states and 1893 transitions. [2024-11-08 17:13:13,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-08 17:13:13,294 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.467741935483871) internal successors, (215), 62 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2024-11-08 17:13:13,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:13,298 INFO L225 Difference]: With dead ends: 1738 [2024-11-08 17:13:13,298 INFO L226 Difference]: Without dead ends: 1433 [2024-11-08 17:13:13,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=236, Invalid=5616, Unknown=0, NotChecked=0, Total=5852 [2024-11-08 17:13:13,299 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 168 mSDsluCounter, 7530 mSDsCounter, 0 mSdLazyCounter, 6479 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 7693 SdHoareTripleChecker+Invalid, 6508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 6479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:13,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 7693 Invalid, 6508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 6479 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-08 17:13:13,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2024-11-08 17:13:13,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1398. [2024-11-08 17:13:13,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1394 states have (on average 1.114777618364419) internal successors, (1554), 1397 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:13,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 1554 transitions. [2024-11-08 17:13:13,322 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 1554 transitions. Word has length 134 [2024-11-08 17:13:13,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:13,322 INFO L471 AbstractCegarLoop]: Abstraction has 1398 states and 1554 transitions. [2024-11-08 17:13:13,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.467741935483871) internal successors, (215), 62 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:13,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 1554 transitions. [2024-11-08 17:13:13,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-08 17:13:13,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:13,325 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:13:13,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-08 17:13:13,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:13,526 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:13:13,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:13,526 INFO L85 PathProgramCache]: Analyzing trace with hash 212484881, now seen corresponding path program 9 times [2024-11-08 17:13:13,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:13,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438057107] [2024-11-08 17:13:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:13,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 91 proven. 278 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:13:14,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:14,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438057107] [2024-11-08 17:13:14,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438057107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:13:14,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374036583] [2024-11-08 17:13:14,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:13:14,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:14,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:13:14,892 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:13:14,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-08 17:13:19,835 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-08 17:13:19,835 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:13:19,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-08 17:13:19,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:13:19,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:13:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 128 proven. 241 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:13:20,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:13:22,828 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 128 proven. 241 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:13:22,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374036583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:13:22,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:13:22,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 71 [2024-11-08 17:13:22,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879779780] [2024-11-08 17:13:22,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:13:22,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-08 17:13:22,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:22,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-08 17:13:22,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=657, Invalid=4455, Unknown=0, NotChecked=0, Total=5112 [2024-11-08 17:13:22,831 INFO L87 Difference]: Start difference. First operand 1398 states and 1554 transitions. Second operand has 72 states, 71 states have (on average 4.112676056338028) internal successors, (292), 72 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:24,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:24,734 INFO L93 Difference]: Finished difference Result 1431 states and 1574 transitions. [2024-11-08 17:13:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 17:13:24,735 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 4.112676056338028) internal successors, (292), 72 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2024-11-08 17:13:24,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:24,739 INFO L225 Difference]: With dead ends: 1431 [2024-11-08 17:13:24,739 INFO L226 Difference]: Without dead ends: 1428 [2024-11-08 17:13:24,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2310 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=851, Invalid=5955, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 17:13:24,741 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 117 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:24,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1218 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 17:13:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2024-11-08 17:13:24,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1404. [2024-11-08 17:13:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1400 states have (on average 1.1042857142857143) internal successors, (1546), 1403 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1546 transitions. [2024-11-08 17:13:24,759 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1546 transitions. Word has length 134 [2024-11-08 17:13:24,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:24,759 INFO L471 AbstractCegarLoop]: Abstraction has 1404 states and 1546 transitions. [2024-11-08 17:13:24,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 4.112676056338028) internal successors, (292), 72 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:24,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1546 transitions. [2024-11-08 17:13:24,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-08 17:13:24,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:24,761 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:13:24,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-08 17:13:24,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:24,962 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:13:24,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:24,962 INFO L85 PathProgramCache]: Analyzing trace with hash -683817774, now seen corresponding path program 3 times [2024-11-08 17:13:24,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:24,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302053341] [2024-11-08 17:13:24,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:24,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 91 proven. 260 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:13:26,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:26,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302053341] [2024-11-08 17:13:26,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302053341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:13:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731769326] [2024-11-08 17:13:26,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:13:26,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:13:26,359 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:13:26,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-08 17:13:38,288 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-08 17:13:38,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:13:38,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-08 17:13:38,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:13:38,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:13:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 128 proven. 223 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:13:39,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:13:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 128 proven. 223 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:13:41,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731769326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:13:41,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:13:41,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2024-11-08 17:13:41,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523507537] [2024-11-08 17:13:41,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:13:41,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-08 17:13:41,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-08 17:13:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=4327, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 17:13:41,496 INFO L87 Difference]: Start difference. First operand 1404 states and 1546 transitions. Second operand has 71 states, 70 states have (on average 4.385714285714286) internal successors, (307), 71 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:43,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:43,894 INFO L93 Difference]: Finished difference Result 1410 states and 1551 transitions. [2024-11-08 17:13:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 17:13:43,895 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 4.385714285714286) internal successors, (307), 71 states have internal predecessors, (307), 0 states have call successors, (0), 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 137 [2024-11-08 17:13:43,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:43,898 INFO L225 Difference]: With dead ends: 1410 [2024-11-08 17:13:43,898 INFO L226 Difference]: Without dead ends: 1405 [2024-11-08 17:13:43,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2274 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=930, Invalid=6902, Unknown=0, NotChecked=0, Total=7832 [2024-11-08 17:13:43,899 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 131 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 2019 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:43,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1306 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2019 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 17:13:43,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2024-11-08 17:13:43,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1401. [2024-11-08 17:13:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1397 states have (on average 1.1037938439513242) internal successors, (1542), 1400 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1542 transitions. [2024-11-08 17:13:43,918 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1542 transitions. Word has length 137 [2024-11-08 17:13:43,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:43,918 INFO L471 AbstractCegarLoop]: Abstraction has 1401 states and 1542 transitions. [2024-11-08 17:13:43,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 4.385714285714286) internal successors, (307), 71 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:43,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1542 transitions. [2024-11-08 17:13:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-08 17:13:43,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:43,921 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:13:43,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-08 17:13:44,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:44,122 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:13:44,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:44,122 INFO L85 PathProgramCache]: Analyzing trace with hash -710396729, now seen corresponding path program 20 times [2024-11-08 17:13:44,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:44,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040700588] [2024-11-08 17:13:44,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:44,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 378 proven. 465 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:13:46,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:46,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040700588] [2024-11-08 17:13:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040700588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:13:46,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97160349] [2024-11-08 17:13:46,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:13:46,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:46,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:13:46,542 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:13:46,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-08 17:13:46,975 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:13:46,975 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:13:46,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 163 conjuncts are in the unsatisfiable core [2024-11-08 17:13:46,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:13:46,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:13:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 435 proven. 408 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:13:48,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:13:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 435 proven. 408 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:13:51,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97160349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:13:51,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:13:51,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 95 [2024-11-08 17:13:51,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22112426] [2024-11-08 17:13:51,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:13:51,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-08 17:13:51,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:51,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-08 17:13:51,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1126, Invalid=7994, Unknown=0, NotChecked=0, Total=9120 [2024-11-08 17:13:51,868 INFO L87 Difference]: Start difference. First operand 1401 states and 1542 transitions. Second operand has 96 states, 95 states have (on average 3.705263157894737) internal successors, (352), 96 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:57,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:57,177 INFO L93 Difference]: Finished difference Result 1478 states and 1616 transitions. [2024-11-08 17:13:57,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-08 17:13:57,178 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 3.705263157894737) internal successors, (352), 96 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2024-11-08 17:13:57,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:57,180 INFO L225 Difference]: With dead ends: 1478 [2024-11-08 17:13:57,180 INFO L226 Difference]: Without dead ends: 1478 [2024-11-08 17:13:57,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4003 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1380, Invalid=11276, Unknown=0, NotChecked=0, Total=12656 [2024-11-08 17:13:57,181 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 789 mSDsluCounter, 2781 mSDsCounter, 0 mSdLazyCounter, 5592 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 5682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:57,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 2898 Invalid, 5682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 5592 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-08 17:13:57,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2024-11-08 17:13:57,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1436. [2024-11-08 17:13:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1432 states have (on average 1.1124301675977655) internal successors, (1593), 1435 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1593 transitions. [2024-11-08 17:13:57,191 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1593 transitions. Word has length 138 [2024-11-08 17:13:57,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:57,192 INFO L471 AbstractCegarLoop]: Abstraction has 1436 states and 1593 transitions. [2024-11-08 17:13:57,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 3.705263157894737) internal successors, (352), 96 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:13:57,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1593 transitions. [2024-11-08 17:13:57,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-08 17:13:57,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:57,193 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:13:57,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-11-08 17:13:57,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:57,394 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:13:57,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:57,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1489568226, now seen corresponding path program 16 times [2024-11-08 17:13:57,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:57,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376406016] [2024-11-08 17:13:57,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:57,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 56 proven. 351 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-08 17:13:58,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:58,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376406016] [2024-11-08 17:13:58,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376406016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:13:58,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299892932] [2024-11-08 17:13:58,201 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:13:58,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:58,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:13:58,202 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:13:58,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-08 17:14:05,538 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:14:05,538 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:14:05,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-08 17:14:05,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:06,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:14:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 30 proven. 378 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:14:06,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:07,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:14:07,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:14:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 30 proven. 378 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:14:07,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299892932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:14:07,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:14:07,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 27] total 52 [2024-11-08 17:14:07,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004329321] [2024-11-08 17:14:07,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:14:07,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-08 17:14:07,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:07,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-08 17:14:07,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2542, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 17:14:07,330 INFO L87 Difference]: Start difference. First operand 1436 states and 1593 transitions. Second operand has 52 states, 52 states have (on average 4.038461538461538) internal successors, (210), 52 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:12,383 INFO L93 Difference]: Finished difference Result 1906 states and 2064 transitions. [2024-11-08 17:14:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-08 17:14:12,384 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.038461538461538) internal successors, (210), 52 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2024-11-08 17:14:12,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:12,386 INFO L225 Difference]: With dead ends: 1906 [2024-11-08 17:14:12,386 INFO L226 Difference]: Without dead ends: 1642 [2024-11-08 17:14:12,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=308, Invalid=8434, Unknown=0, NotChecked=0, Total=8742 [2024-11-08 17:14:12,387 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 44 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 5850 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 5867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 5850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:12,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 2289 Invalid, 5867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 5850 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-08 17:14:12,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2024-11-08 17:14:12,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1621. [2024-11-08 17:14:12,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1617 states have (on average 1.0995670995670996) internal successors, (1778), 1620 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 1778 transitions. [2024-11-08 17:14:12,399 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 1778 transitions. Word has length 138 [2024-11-08 17:14:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:12,400 INFO L471 AbstractCegarLoop]: Abstraction has 1621 states and 1778 transitions. [2024-11-08 17:14:12,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.038461538461538) internal successors, (210), 52 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:12,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 1778 transitions. [2024-11-08 17:14:12,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-08 17:14:12,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:12,402 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:12,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-11-08 17:14:12,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:12,602 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:14:12,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:12,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2125038838, now seen corresponding path program 21 times [2024-11-08 17:14:12,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:12,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644630575] [2024-11-08 17:14:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:12,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 32 proven. 858 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:15,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:15,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644630575] [2024-11-08 17:14:15,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644630575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:15,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855407609] [2024-11-08 17:14:15,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:14:15,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:15,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:15,386 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:15,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-08 17:14:16,406 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-08 17:14:16,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:14:16,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 186 conjuncts are in the unsatisfiable core [2024-11-08 17:14:16,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:17,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:14:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 32 proven. 858 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:17,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:18,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:14:18,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:14:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 32 proven. 858 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:18,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855407609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:14:18,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:14:18,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 65 [2024-11-08 17:14:18,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093601176] [2024-11-08 17:14:18,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:14:18,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-08 17:14:18,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:18,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-08 17:14:18,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=3997, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 17:14:18,458 INFO L87 Difference]: Start difference. First operand 1621 states and 1778 transitions. Second operand has 65 states, 65 states have (on average 3.4615384615384617) internal successors, (225), 65 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:23,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:23,498 INFO L93 Difference]: Finished difference Result 2160 states and 2343 transitions. [2024-11-08 17:14:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 17:14:23,499 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.4615384615384617) internal successors, (225), 65 states have internal predecessors, (225), 0 states have call successors, (0), 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 141 [2024-11-08 17:14:23,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:23,501 INFO L225 Difference]: With dead ends: 2160 [2024-11-08 17:14:23,502 INFO L226 Difference]: Without dead ends: 1797 [2024-11-08 17:14:23,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=248, Invalid=6232, Unknown=0, NotChecked=0, Total=6480 [2024-11-08 17:14:23,502 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 180 mSDsluCounter, 8035 mSDsCounter, 0 mSdLazyCounter, 7048 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 8205 SdHoareTripleChecker+Invalid, 7080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 7048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:23,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 8205 Invalid, 7080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 7048 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-08 17:14:23,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2024-11-08 17:14:23,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1754. [2024-11-08 17:14:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1750 states have (on average 1.104) internal successors, (1932), 1753 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 1932 transitions. [2024-11-08 17:14:23,516 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 1932 transitions. Word has length 141 [2024-11-08 17:14:23,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:23,517 INFO L471 AbstractCegarLoop]: Abstraction has 1754 states and 1932 transitions. [2024-11-08 17:14:23,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.4615384615384617) internal successors, (225), 65 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:23,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 1932 transitions. [2024-11-08 17:14:23,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-08 17:14:23,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:23,519 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:23,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-11-08 17:14:23,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:23,720 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:14:23,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:23,720 INFO L85 PathProgramCache]: Analyzing trace with hash 888896727, now seen corresponding path program 22 times [2024-11-08 17:14:23,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:23,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043069536] [2024-11-08 17:14:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:23,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 120 proven. 270 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:14:25,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:25,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043069536] [2024-11-08 17:14:25,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043069536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:25,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12173316] [2024-11-08 17:14:25,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:14:25,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:25,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:25,191 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:25,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-08 17:14:28,011 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:14:28,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:14:28,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-08 17:14:28,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:28,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:14:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 153 proven. 237 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:14:29,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 153 proven. 237 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:14:31,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12173316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:14:31,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:14:31,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 76 [2024-11-08 17:14:31,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532431398] [2024-11-08 17:14:31,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:14:31,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-08 17:14:31,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:31,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-08 17:14:31,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=5088, Unknown=0, NotChecked=0, Total=5852 [2024-11-08 17:14:31,227 INFO L87 Difference]: Start difference. First operand 1754 states and 1932 transitions. Second operand has 77 states, 76 states have (on average 4.315789473684211) internal successors, (328), 77 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:33,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:33,832 INFO L93 Difference]: Finished difference Result 1766 states and 1943 transitions. [2024-11-08 17:14:33,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 17:14:33,832 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 4.315789473684211) internal successors, (328), 77 states have internal predecessors, (328), 0 states have call successors, (0), 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 144 [2024-11-08 17:14:33,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:33,834 INFO L225 Difference]: With dead ends: 1766 [2024-11-08 17:14:33,834 INFO L226 Difference]: Without dead ends: 1706 [2024-11-08 17:14:33,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=951, Invalid=6531, Unknown=0, NotChecked=0, Total=7482 [2024-11-08 17:14:33,835 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 171 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:33,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1538 Invalid, 2497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 17:14:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2024-11-08 17:14:33,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1699. [2024-11-08 17:14:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1695 states have (on average 1.1061946902654867) internal successors, (1875), 1698 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 1875 transitions. [2024-11-08 17:14:33,849 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 1875 transitions. Word has length 144 [2024-11-08 17:14:33,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:33,849 INFO L471 AbstractCegarLoop]: Abstraction has 1699 states and 1875 transitions. [2024-11-08 17:14:33,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 4.315789473684211) internal successors, (328), 77 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:33,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 1875 transitions. [2024-11-08 17:14:33,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-08 17:14:33,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:33,851 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:33,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-08 17:14:34,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2024-11-08 17:14:34,051 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:14:34,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:34,052 INFO L85 PathProgramCache]: Analyzing trace with hash 627646546, now seen corresponding path program 23 times [2024-11-08 17:14:34,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:34,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744830439] [2024-11-08 17:14:34,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:34,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:36,794 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 435 proven. 520 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:36,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:36,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744830439] [2024-11-08 17:14:36,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744830439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:36,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501454796] [2024-11-08 17:14:36,795 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:14:36,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:36,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:36,796 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:36,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-08 17:14:37,535 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-08 17:14:37,536 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:14:37,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 177 conjuncts are in the unsatisfiable core [2024-11-08 17:14:37,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:37,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:14:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 496 proven. 459 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:39,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 496 proven. 459 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:43,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501454796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:14:43,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:14:43,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 98 [2024-11-08 17:14:43,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071131614] [2024-11-08 17:14:43,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:14:43,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-08 17:14:43,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:43,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-08 17:14:43,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1315, Invalid=8387, Unknown=0, NotChecked=0, Total=9702 [2024-11-08 17:14:43,637 INFO L87 Difference]: Start difference. First operand 1699 states and 1875 transitions. Second operand has 99 states, 98 states have (on average 3.7755102040816326) internal successors, (370), 99 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:49,331 INFO L93 Difference]: Finished difference Result 1735 states and 1893 transitions. [2024-11-08 17:14:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 17:14:49,332 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 3.7755102040816326) internal successors, (370), 99 states have internal predecessors, (370), 0 states have call successors, (0), 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 145 [2024-11-08 17:14:49,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:49,334 INFO L225 Difference]: With dead ends: 1735 [2024-11-08 17:14:49,334 INFO L226 Difference]: Without dead ends: 1735 [2024-11-08 17:14:49,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4260 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1570, Invalid=11770, Unknown=0, NotChecked=0, Total=13340 [2024-11-08 17:14:49,335 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 923 mSDsluCounter, 3326 mSDsCounter, 0 mSdLazyCounter, 6121 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 3449 SdHoareTripleChecker+Invalid, 6226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 6121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:49,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 3449 Invalid, 6226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 6121 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-08 17:14:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2024-11-08 17:14:49,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1710. [2024-11-08 17:14:49,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1706 states have (on average 1.1078546307151231) internal successors, (1890), 1709 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:49,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 1890 transitions. [2024-11-08 17:14:49,346 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 1890 transitions. Word has length 145 [2024-11-08 17:14:49,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:49,346 INFO L471 AbstractCegarLoop]: Abstraction has 1710 states and 1890 transitions. [2024-11-08 17:14:49,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 3.7755102040816326) internal successors, (370), 99 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 1890 transitions. [2024-11-08 17:14:49,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-08 17:14:49,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:49,348 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:49,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-08 17:14:49,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-11-08 17:14:49,549 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:14:49,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:49,549 INFO L85 PathProgramCache]: Analyzing trace with hash -116735982, now seen corresponding path program 17 times [2024-11-08 17:14:49,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:49,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276869993] [2024-11-08 17:14:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:49,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 120 proven. 325 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-08 17:14:50,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:50,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276869993] [2024-11-08 17:14:50,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276869993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:50,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000844291] [2024-11-08 17:14:50,986 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:14:50,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:50,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:50,987 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:50,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-08 17:15:07,253 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-08 17:15:07,253 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:15:07,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-08 17:15:07,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:07,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:15:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 153 proven. 292 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-08 17:15:08,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:15:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 153 proven. 292 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-08 17:15:10,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000844291] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:15:10,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:15:10,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 63 [2024-11-08 17:15:10,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778786835] [2024-11-08 17:15:10,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:15:10,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-08 17:15:10,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:10,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-08 17:15:10,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=3487, Unknown=0, NotChecked=0, Total=4032 [2024-11-08 17:15:10,625 INFO L87 Difference]: Start difference. First operand 1710 states and 1890 transitions. Second operand has 64 states, 63 states have (on average 4.317460317460317) internal successors, (272), 64 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:15:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:13,116 INFO L93 Difference]: Finished difference Result 1714 states and 1885 transitions. [2024-11-08 17:15:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 17:15:13,117 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 4.317460317460317) internal successors, (272), 64 states have internal predecessors, (272), 0 states have call successors, (0), 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 146 [2024-11-08 17:15:13,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:13,119 INFO L225 Difference]: With dead ends: 1714 [2024-11-08 17:15:13,119 INFO L226 Difference]: Without dead ends: 1714 [2024-11-08 17:15:13,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1585 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=675, Invalid=4875, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 17:15:13,120 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 278 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:13,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1641 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 17:15:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2024-11-08 17:15:13,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1710. [2024-11-08 17:15:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1706 states have (on average 1.1031652989449003) internal successors, (1882), 1709 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:15:13,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 1882 transitions. [2024-11-08 17:15:13,137 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 1882 transitions. Word has length 146 [2024-11-08 17:15:13,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:13,137 INFO L471 AbstractCegarLoop]: Abstraction has 1710 states and 1882 transitions. [2024-11-08 17:15:13,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 4.317460317460317) internal successors, (272), 64 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:15:13,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 1882 transitions. [2024-11-08 17:15:13,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-08 17:15:13,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:13,138 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:13,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-08 17:15:13,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2024-11-08 17:15:13,339 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:15:13,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:13,340 INFO L85 PathProgramCache]: Analyzing trace with hash 676151866, now seen corresponding path program 10 times [2024-11-08 17:15:13,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:13,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061862662] [2024-11-08 17:15:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:13,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 120 proven. 335 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-08 17:15:14,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061862662] [2024-11-08 17:15:14,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061862662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:15:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260927071] [2024-11-08 17:15:14,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:15:14,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:14,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:14,815 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:15:14,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-08 17:15:21,720 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:15:21,720 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:15:21,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-08 17:15:21,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 153 proven. 302 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-08 17:15:22,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:15:23,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-08 17:15:24,570 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 153 proven. 302 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-08 17:15:24,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260927071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:15:24,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:15:24,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 66 [2024-11-08 17:15:24,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562440261] [2024-11-08 17:15:24,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:15:24,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-08 17:15:24,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:24,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-08 17:15:24,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=594, Invalid=3828, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 17:15:24,574 INFO L87 Difference]: Start difference. First operand 1710 states and 1882 transitions. Second operand has 67 states, 66 states have (on average 4.166666666666667) internal successors, (275), 67 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:15:26,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:26,655 INFO L93 Difference]: Finished difference Result 1749 states and 1908 transitions. [2024-11-08 17:15:26,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-08 17:15:26,656 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 4.166666666666667) internal successors, (275), 67 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-11-08 17:15:26,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:26,658 INFO L225 Difference]: With dead ends: 1749 [2024-11-08 17:15:26,658 INFO L226 Difference]: Without dead ends: 1746 [2024-11-08 17:15:26,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2068 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=723, Invalid=5283, Unknown=0, NotChecked=0, Total=6006 [2024-11-08 17:15:26,659 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 90 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:26,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1723 Invalid, 2421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 17:15:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2024-11-08 17:15:26,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1710. [2024-11-08 17:15:26,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1706 states have (on average 1.0937866354044548) internal successors, (1866), 1709 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:15:26,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 1866 transitions. [2024-11-08 17:15:26,670 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 1866 transitions. Word has length 147 [2024-11-08 17:15:26,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:26,670 INFO L471 AbstractCegarLoop]: Abstraction has 1710 states and 1866 transitions. [2024-11-08 17:15:26,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 4.166666666666667) internal successors, (275), 67 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:15:26,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 1866 transitions. [2024-11-08 17:15:26,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-08 17:15:26,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:26,672 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:26,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-11-08 17:15:26,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2024-11-08 17:15:26,873 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:15:26,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash -2069307489, now seen corresponding path program 24 times [2024-11-08 17:15:26,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:26,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279427746] [2024-11-08 17:15:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:26,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 34 proven. 971 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:15:29,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:29,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279427746] [2024-11-08 17:15:29,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279427746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:15:29,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503807871] [2024-11-08 17:15:29,551 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:15:29,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:29,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:29,552 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:15:29,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-08 17:15:32,393 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-08 17:15:32,393 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:15:32,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 202 conjuncts are in the unsatisfiable core [2024-11-08 17:15:32,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:32,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:15:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 34 proven. 971 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:15:34,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:15:34,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:15:34,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:15:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 34 proven. 971 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:15:36,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503807871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:15:36,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:15:36,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 85 [2024-11-08 17:15:36,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540911800] [2024-11-08 17:15:36,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:15:36,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-08 17:15:36,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:36,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-08 17:15:36,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=6919, Unknown=0, NotChecked=0, Total=7140 [2024-11-08 17:15:36,292 INFO L87 Difference]: Start difference. First operand 1710 states and 1866 transitions. Second operand has 85 states, 85 states have (on average 3.4705882352941178) internal successors, (295), 85 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:15:42,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:42,378 INFO L93 Difference]: Finished difference Result 2260 states and 2443 transitions. [2024-11-08 17:15:42,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-08 17:15:42,378 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 3.4705882352941178) internal successors, (295), 85 states have internal predecessors, (295), 0 states have call successors, (0), 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 148 [2024-11-08 17:15:42,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:42,380 INFO L225 Difference]: With dead ends: 2260 [2024-11-08 17:15:42,380 INFO L226 Difference]: Without dead ends: 1891 [2024-11-08 17:15:42,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1419 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=306, Invalid=9996, Unknown=0, NotChecked=0, Total=10302 [2024-11-08 17:15:42,381 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 273 mSDsluCounter, 10098 mSDsCounter, 0 mSdLazyCounter, 8926 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 10276 SdHoareTripleChecker+Invalid, 8970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 8926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:42,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 10276 Invalid, 8970 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 8926 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-08 17:15:42,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2024-11-08 17:15:42,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1820. [2024-11-08 17:15:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1816 states have (on average 1.0908590308370043) internal successors, (1981), 1819 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:15:42,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 1981 transitions. [2024-11-08 17:15:42,395 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 1981 transitions. Word has length 148 [2024-11-08 17:15:42,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:42,396 INFO L471 AbstractCegarLoop]: Abstraction has 1820 states and 1981 transitions. [2024-11-08 17:15:42,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 3.4705882352941178) internal successors, (295), 85 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:15:42,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 1981 transitions. [2024-11-08 17:15:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-08 17:15:42,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:42,398 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:42,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-08 17:15:42,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:42,599 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:15:42,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:42,599 INFO L85 PathProgramCache]: Analyzing trace with hash -552188789, now seen corresponding path program 18 times [2024-11-08 17:15:42,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:42,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371150959] [2024-11-08 17:15:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:42,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 62 proven. 435 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-11-08 17:15:43,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:43,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371150959] [2024-11-08 17:15:43,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371150959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:15:43,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251466358] [2024-11-08 17:15:43,545 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:15:43,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:43,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:43,546 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:15:43,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-08 17:16:02,292 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-08 17:16:02,293 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:16:02,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 188 conjuncts are in the unsatisfiable core [2024-11-08 17:16:02,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:03,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:16:04,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-08 17:16:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 33 proven. 465 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-08 17:16:05,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:16:06,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 17:16:06,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 17:16:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 33 proven. 465 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-08 17:16:07,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251466358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:16:07,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:16:07,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29, 29] total 80 [2024-11-08 17:16:07,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981698760] [2024-11-08 17:16:07,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:16:07,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-08 17:16:07,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:07,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-08 17:16:07,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=6127, Unknown=0, NotChecked=0, Total=6320 [2024-11-08 17:16:07,317 INFO L87 Difference]: Start difference. First operand 1820 states and 1981 transitions. Second operand has 80 states, 80 states have (on average 4.1125) internal successors, (329), 80 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:15,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:16:15,326 INFO L93 Difference]: Finished difference Result 2400 states and 2561 transitions. [2024-11-08 17:16:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-08 17:16:15,327 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 4.1125) internal successors, (329), 80 states have internal predecessors, (329), 0 states have call successors, (0), 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 151 [2024-11-08 17:16:15,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:16:15,329 INFO L225 Difference]: With dead ends: 2400 [2024-11-08 17:16:15,329 INFO L226 Difference]: Without dead ends: 1994 [2024-11-08 17:16:15,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1584 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=454, Invalid=15296, Unknown=0, NotChecked=0, Total=15750 [2024-11-08 17:16:15,330 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 47 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 7825 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 2925 SdHoareTripleChecker+Invalid, 7848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 7825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:16:15,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 2925 Invalid, 7848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 7825 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-08 17:16:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2024-11-08 17:16:15,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1970. [2024-11-08 17:16:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1966 states have (on average 1.0834181078331637) internal successors, (2130), 1969 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2130 transitions. [2024-11-08 17:16:15,346 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2130 transitions. Word has length 151 [2024-11-08 17:16:15,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:16:15,347 INFO L471 AbstractCegarLoop]: Abstraction has 1970 states and 2130 transitions. [2024-11-08 17:16:15,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 4.1125) internal successors, (329), 80 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:15,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2130 transitions. [2024-11-08 17:16:15,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-08 17:16:15,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:16:15,349 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 17, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:15,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2024-11-08 17:16:15,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:15,550 INFO L396 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-08 17:16:15,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:15,550 INFO L85 PathProgramCache]: Analyzing trace with hash -510183081, now seen corresponding path program 25 times [2024-11-08 17:16:15,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:15,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463163274] [2024-11-08 17:16:15,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:15,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 496 proven. 578 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:18,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:18,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463163274] [2024-11-08 17:16:18,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463163274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:18,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855775878] [2024-11-08 17:16:18,107 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 17:16:18,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:18,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:18,109 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:18,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8bfa47c-a380-46c9-bc1b-c74ef5866559/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-08 17:16:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:18,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 181 conjuncts are in the unsatisfiable core [2024-11-08 17:16:18,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:18,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:16:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 561 proven. 513 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:20,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:16:24,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 561 proven. 513 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:24,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855775878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:16:24,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:16:24,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 105 [2024-11-08 17:16:24,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271672718] [2024-11-08 17:16:24,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:16:24,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-11-08 17:16:24,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:24,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-11-08 17:16:24,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1387, Invalid=9743, Unknown=0, NotChecked=0, Total=11130 [2024-11-08 17:16:24,219 INFO L87 Difference]: Start difference. First operand 1970 states and 2130 transitions. Second operand has 106 states, 105 states have (on average 3.6952380952380954) internal successors, (388), 106 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)