./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:00:23,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:00:23,496 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 15:00:23,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:00:23,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:00:23,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:00:23,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:00:23,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:00:23,542 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:00:23,542 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:00:23,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:00:23,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:00:23,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:00:23,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:00:23,543 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:00:23,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:00:23,544 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:00:23,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:00:23,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:00:23,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:00:23,544 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:00:23,544 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:00:23,545 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:00:23,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:00:23,545 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:00:23,545 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:00:23,545 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:00:23,545 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:00:23,545 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:00:23,546 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:00:23,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:00:23,546 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:00:23,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:00:23,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:00:23,546 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:00:23,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:00:23,546 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:00:23,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:00:23,547 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:00:23,547 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:00:23,547 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:00:23,547 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:00:23,548 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2024-11-13 15:00:23,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:00:23,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:00:23,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:00:23,974 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:00:23,974 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:00:23,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i Unable to find full path for "g++" [2024-11-13 15:00:26,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:00:26,520 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:00:26,523 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i [2024-11-13 15:00:26,540 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/data/eb8b33da1/d414a68ea4d84d90bf1b76e612c3dbf4/FLAG9a49584fa [2024-11-13 15:00:26,556 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/data/eb8b33da1/d414a68ea4d84d90bf1b76e612c3dbf4 [2024-11-13 15:00:26,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:00:26,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:00:26,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:00:26,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:00:26,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:00:26,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:00:26" (1/1) ... [2024-11-13 15:00:26,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@649134ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:26, skipping insertion in model container [2024-11-13 15:00:26,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:00:26" (1/1) ... [2024-11-13 15:00:26,643 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:00:27,246 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:00:27,324 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:00:27,328 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:00:27,333 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:00:27,342 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:00:27,389 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:00:27,389 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:00:27,393 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:00:27,394 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:00:27,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:00:27,430 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:00:27,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:00:27,671 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:00:27,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27 WrapperNode [2024-11-13 15:00:27,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:00:27,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:00:27,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:00:27,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:00:27,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27" (1/1) ... [2024-11-13 15:00:27,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27" (1/1) ... [2024-11-13 15:00:27,855 INFO L138 Inliner]: procedures = 207, calls = 222, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1259 [2024-11-13 15:00:27,855 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:00:27,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:00:27,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:00:27,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:00:27,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27" (1/1) ... [2024-11-13 15:00:27,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27" (1/1) ... [2024-11-13 15:00:27,883 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27" (1/1) ... [2024-11-13 15:00:27,960 INFO L175 MemorySlicer]: Split 206 memory accesses to 3 slices as follows [2, 170, 34]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 46 writes are split as follows [0, 42, 4]. [2024-11-13 15:00:27,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27" (1/1) ... [2024-11-13 15:00:27,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27" (1/1) ... [2024-11-13 15:00:28,002 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27" (1/1) ... [2024-11-13 15:00:28,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27" (1/1) ... [2024-11-13 15:00:28,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27" (1/1) ... [2024-11-13 15:00:28,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27" (1/1) ... [2024-11-13 15:00:28,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:00:28,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:00:28,092 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:00:28,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:00:28,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27" (1/1) ... [2024-11-13 15:00:28,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:00:28,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:28,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:00:28,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:00:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-13 15:00:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-13 15:00:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-13 15:00:28,163 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-13 15:00:28,163 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-13 15:00:28,164 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-13 15:00:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:00:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:00:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 15:00:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 15:00:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:00:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:00:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:00:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 15:00:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:00:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:00:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 15:00:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:00:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:00:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:00:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 15:00:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 15:00:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:00:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:00:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 15:00:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:00:28,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:00:28,452 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:00:28,454 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:00:28,457 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 15:00:28,527 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 15:00:28,549 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 15:00:31,538 INFO L? ?]: Removed 1028 outVars from TransFormulas that were not future-live. [2024-11-13 15:00:31,538 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:00:31,579 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:00:31,580 INFO L316 CfgBuilder]: Removed 54 assume(true) statements. [2024-11-13 15:00:31,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:00:31 BoogieIcfgContainer [2024-11-13 15:00:31,580 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:00:31,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:00:31,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:00:31,589 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:00:31,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:00:26" (1/3) ... [2024-11-13 15:00:31,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673c288f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:00:31, skipping insertion in model container [2024-11-13 15:00:31,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:27" (2/3) ... [2024-11-13 15:00:31,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673c288f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:00:31, skipping insertion in model container [2024-11-13 15:00:31,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:00:31" (3/3) ... [2024-11-13 15:00:31,595 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test2-1.i [2024-11-13 15:00:31,615 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:00:31,617 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_nondet_test2-1.i that has 4 procedures, 1063 locations, 1 initial locations, 33 loop locations, and 420 error locations. [2024-11-13 15:00:31,696 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:00:31,712 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;@1509984e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:00:31,712 INFO L334 AbstractCegarLoop]: Starting to check reachability of 420 error locations. [2024-11-13 15:00:31,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 1053 states, 631 states have (on average 2.0142630744849446) internal successors, (1271), 1048 states have internal predecessors, (1271), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:31,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-13 15:00:31,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:31,728 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-13 15:00:31,728 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr419ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:31,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:31,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1758810, now seen corresponding path program 1 times [2024-11-13 15:00:31,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:31,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315252536] [2024-11-13 15:00:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:31,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:32,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:32,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315252536] [2024-11-13 15:00:32,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315252536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:32,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:32,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:00:32,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274222825] [2024-11-13 15:00:32,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:32,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:00:32,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:32,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:00:32,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:32,202 INFO L87 Difference]: Start difference. First operand has 1053 states, 631 states have (on average 2.0142630744849446) internal successors, (1271), 1048 states have internal predecessors, (1271), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:33,809 INFO L93 Difference]: Finished difference Result 1349 states and 1602 transitions. [2024-11-13 15:00:33,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:00:33,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-13 15:00:33,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:33,830 INFO L225 Difference]: With dead ends: 1349 [2024-11-13 15:00:33,830 INFO L226 Difference]: Without dead ends: 1345 [2024-11-13 15:00:33,832 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 [2024-11-13 15:00:33,840 INFO L432 NwaCegarLoop]: 1098 mSDtfsCounter, 382 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:33,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 2648 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 15:00:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2024-11-13 15:00:33,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1260. [2024-11-13 15:00:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 844 states have (on average 1.8815165876777251) internal successors, (1588), 1255 states have internal predecessors, (1588), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1594 transitions. [2024-11-13 15:00:33,995 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1594 transitions. Word has length 4 [2024-11-13 15:00:33,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:33,996 INFO L471 AbstractCegarLoop]: Abstraction has 1260 states and 1594 transitions. [2024-11-13 15:00:33,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1594 transitions. [2024-11-13 15:00:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-13 15:00:33,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:33,996 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-13 15:00:33,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:00:33,997 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:33,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:33,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-13 15:00:33,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:33,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992484162] [2024-11-13 15:00:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:33,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:34,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:34,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992484162] [2024-11-13 15:00:34,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992484162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:34,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:34,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:00:34,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725233062] [2024-11-13 15:00:34,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:34,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:00:34,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:34,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:00:34,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:34,122 INFO L87 Difference]: Start difference. First operand 1260 states and 1594 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:34,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:34,925 INFO L93 Difference]: Finished difference Result 1257 states and 1586 transitions. [2024-11-13 15:00:34,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:00:34,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-13 15:00:34,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:34,931 INFO L225 Difference]: With dead ends: 1257 [2024-11-13 15:00:34,931 INFO L226 Difference]: Without dead ends: 1257 [2024-11-13 15:00:34,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:34,932 INFO L432 NwaCegarLoop]: 817 mSDtfsCounter, 1086 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:34,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 861 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:00:34,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2024-11-13 15:00:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1257. [2024-11-13 15:00:34,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 852 states have (on average 1.8544600938967135) internal successors, (1580), 1252 states have internal predecessors, (1580), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1586 transitions. [2024-11-13 15:00:34,967 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1586 transitions. Word has length 4 [2024-11-13 15:00:34,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:34,967 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1586 transitions. [2024-11-13 15:00:34,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1586 transitions. [2024-11-13 15:00:34,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-13 15:00:34,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:34,968 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-13 15:00:34,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:00:34,968 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:34,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:34,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-13 15:00:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:34,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311646777] [2024-11-13 15:00:34,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:34,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:35,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:35,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311646777] [2024-11-13 15:00:35,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311646777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:35,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:35,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:00:35,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66952490] [2024-11-13 15:00:35,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:35,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:00:35,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:35,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:00:35,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:35,115 INFO L87 Difference]: Start difference. First operand 1257 states and 1586 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:36,116 INFO L93 Difference]: Finished difference Result 1341 states and 1581 transitions. [2024-11-13 15:00:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:00:36,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-13 15:00:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:36,125 INFO L225 Difference]: With dead ends: 1341 [2024-11-13 15:00:36,125 INFO L226 Difference]: Without dead ends: 1341 [2024-11-13 15:00:36,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:36,128 INFO L432 NwaCegarLoop]: 1100 mSDtfsCounter, 380 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:36,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1874 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 15:00:36,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2024-11-13 15:00:36,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1256. [2024-11-13 15:00:36,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 852 states have (on average 1.846244131455399) internal successors, (1573), 1251 states have internal predecessors, (1573), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1579 transitions. [2024-11-13 15:00:36,209 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1579 transitions. Word has length 4 [2024-11-13 15:00:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:36,209 INFO L471 AbstractCegarLoop]: Abstraction has 1256 states and 1579 transitions. [2024-11-13 15:00:36,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1579 transitions. [2024-11-13 15:00:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 15:00:36,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:36,210 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:36,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:00:36,210 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:36,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:36,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1021429073, now seen corresponding path program 1 times [2024-11-13 15:00:36,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:36,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616266155] [2024-11-13 15:00:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:36,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:36,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:36,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616266155] [2024-11-13 15:00:36,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616266155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:36,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:36,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:36,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767249226] [2024-11-13 15:00:36,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:36,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:00:36,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:36,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:00:36,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:36,497 INFO L87 Difference]: Start difference. First operand 1256 states and 1579 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:38,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:38,160 INFO L93 Difference]: Finished difference Result 1330 states and 1569 transitions. [2024-11-13 15:00:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:00:38,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-13 15:00:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:38,170 INFO L225 Difference]: With dead ends: 1330 [2024-11-13 15:00:38,170 INFO L226 Difference]: Without dead ends: 1330 [2024-11-13 15:00:38,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:00:38,174 INFO L432 NwaCegarLoop]: 837 mSDtfsCounter, 2174 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:38,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 1119 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 15:00:38,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2024-11-13 15:00:38,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1245. [2024-11-13 15:00:38,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 852 states have (on average 1.8321596244131455) internal successors, (1561), 1240 states have internal predecessors, (1561), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:38,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1567 transitions. [2024-11-13 15:00:38,214 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1567 transitions. Word has length 8 [2024-11-13 15:00:38,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:38,215 INFO L471 AbstractCegarLoop]: Abstraction has 1245 states and 1567 transitions. [2024-11-13 15:00:38,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:38,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1567 transitions. [2024-11-13 15:00:38,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:00:38,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:38,216 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:38,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:00:38,216 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:38,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:38,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530194, now seen corresponding path program 1 times [2024-11-13 15:00:38,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:38,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733160394] [2024-11-13 15:00:38,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:38,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:38,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:38,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733160394] [2024-11-13 15:00:38,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733160394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:38,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:38,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:00:38,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310413471] [2024-11-13 15:00:38,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:38,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:00:38,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:38,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:00:38,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:38,334 INFO L87 Difference]: Start difference. First operand 1245 states and 1567 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:39,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:39,269 INFO L93 Difference]: Finished difference Result 1283 states and 1522 transitions. [2024-11-13 15:00:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:00:39,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-13 15:00:39,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:39,274 INFO L225 Difference]: With dead ends: 1283 [2024-11-13 15:00:39,274 INFO L226 Difference]: Without dead ends: 1283 [2024-11-13 15:00:39,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:39,276 INFO L432 NwaCegarLoop]: 1111 mSDtfsCounter, 1060 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:39,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 1407 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 15:00:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2024-11-13 15:00:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1198. [2024-11-13 15:00:39,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 852 states have (on average 1.7769953051643192) internal successors, (1514), 1193 states have internal predecessors, (1514), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1520 transitions. [2024-11-13 15:00:39,317 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1520 transitions. Word has length 9 [2024-11-13 15:00:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:39,319 INFO L471 AbstractCegarLoop]: Abstraction has 1198 states and 1520 transitions. [2024-11-13 15:00:39,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:39,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1520 transitions. [2024-11-13 15:00:39,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:00:39,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:39,322 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:39,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:00:39,322 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:39,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:39,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530193, now seen corresponding path program 1 times [2024-11-13 15:00:39,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:39,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732378368] [2024-11-13 15:00:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:39,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:39,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:39,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732378368] [2024-11-13 15:00:39,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732378368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:39,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:39,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:00:39,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114933071] [2024-11-13 15:00:39,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:39,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:00:39,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:39,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:00:39,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:39,476 INFO L87 Difference]: Start difference. First operand 1198 states and 1520 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:40,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:40,409 INFO L93 Difference]: Finished difference Result 1483 states and 1881 transitions. [2024-11-13 15:00:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:00:40,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-13 15:00:40,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:40,418 INFO L225 Difference]: With dead ends: 1483 [2024-11-13 15:00:40,418 INFO L226 Difference]: Without dead ends: 1483 [2024-11-13 15:00:40,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:40,420 INFO L432 NwaCegarLoop]: 1244 mSDtfsCounter, 852 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:40,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1658 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 15:00:40,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2024-11-13 15:00:40,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1173. [2024-11-13 15:00:40,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 852 states have (on average 1.7476525821596245) internal successors, (1489), 1168 states have internal predecessors, (1489), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1495 transitions. [2024-11-13 15:00:40,457 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1495 transitions. Word has length 9 [2024-11-13 15:00:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:40,458 INFO L471 AbstractCegarLoop]: Abstraction has 1173 states and 1495 transitions. [2024-11-13 15:00:40,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1495 transitions. [2024-11-13 15:00:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 15:00:40,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:40,459 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:40,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:00:40,459 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:40,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:40,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2040141864, now seen corresponding path program 1 times [2024-11-13 15:00:40,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:40,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528976311] [2024-11-13 15:00:40,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:40,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:40,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:40,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528976311] [2024-11-13 15:00:40,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528976311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:40,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:40,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:00:40,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157147086] [2024-11-13 15:00:40,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:40,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:00:40,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:40,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:00:40,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:40,556 INFO L87 Difference]: Start difference. First operand 1173 states and 1495 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:41,363 INFO L93 Difference]: Finished difference Result 1248 states and 1601 transitions. [2024-11-13 15:00:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:00:41,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 15:00:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:41,368 INFO L225 Difference]: With dead ends: 1248 [2024-11-13 15:00:41,368 INFO L226 Difference]: Without dead ends: 1248 [2024-11-13 15:00:41,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:41,370 INFO L432 NwaCegarLoop]: 760 mSDtfsCounter, 1286 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:41,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 1398 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 15:00:41,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2024-11-13 15:00:41,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1150. [2024-11-13 15:00:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 852 states have (on average 1.693661971830986) internal successors, (1443), 1145 states have internal predecessors, (1443), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1449 transitions. [2024-11-13 15:00:41,399 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1449 transitions. Word has length 14 [2024-11-13 15:00:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:41,399 INFO L471 AbstractCegarLoop]: Abstraction has 1150 states and 1449 transitions. [2024-11-13 15:00:41,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:41,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1449 transitions. [2024-11-13 15:00:41,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 15:00:41,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:41,401 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:41,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:00:41,401 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:41,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:41,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2040141863, now seen corresponding path program 1 times [2024-11-13 15:00:41,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:41,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350988486] [2024-11-13 15:00:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:41,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:41,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:41,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350988486] [2024-11-13 15:00:41,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350988486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:41,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:41,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:00:41,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974863084] [2024-11-13 15:00:41,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:41,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:00:41,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:41,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:00:41,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:41,538 INFO L87 Difference]: Start difference. First operand 1150 states and 1449 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:42,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:42,654 INFO L93 Difference]: Finished difference Result 1182 states and 1413 transitions. [2024-11-13 15:00:42,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:00:42,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 15:00:42,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:42,659 INFO L225 Difference]: With dead ends: 1182 [2024-11-13 15:00:42,659 INFO L226 Difference]: Without dead ends: 1182 [2024-11-13 15:00:42,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:42,660 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 431 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:42,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 2433 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 15:00:42,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2024-11-13 15:00:42,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1086. [2024-11-13 15:00:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 788 states have (on average 1.6865482233502538) internal successors, (1329), 1081 states have internal predecessors, (1329), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:42,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1335 transitions. [2024-11-13 15:00:42,691 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1335 transitions. Word has length 14 [2024-11-13 15:00:42,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:42,692 INFO L471 AbstractCegarLoop]: Abstraction has 1086 states and 1335 transitions. [2024-11-13 15:00:42,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:42,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1335 transitions. [2024-11-13 15:00:42,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 15:00:42,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:42,696 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:42,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:00:42,696 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:42,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:42,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2071047692, now seen corresponding path program 1 times [2024-11-13 15:00:42,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:42,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958479193] [2024-11-13 15:00:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:42,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:42,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:42,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958479193] [2024-11-13 15:00:42,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958479193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:42,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:42,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:42,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965013982] [2024-11-13 15:00:42,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:42,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:00:42,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:42,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:00:42,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:42,780 INFO L87 Difference]: Start difference. First operand 1086 states and 1335 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) [2024-11-13 15:00:42,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:42,852 INFO L93 Difference]: Finished difference Result 1064 states and 1299 transitions. [2024-11-13 15:00:42,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:00:42,852 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 [2024-11-13 15:00:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:42,855 INFO L225 Difference]: With dead ends: 1064 [2024-11-13 15:00:42,855 INFO L226 Difference]: Without dead ends: 1064 [2024-11-13 15:00:42,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:42,857 INFO L432 NwaCegarLoop]: 1037 mSDtfsCounter, 143 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:42,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2982 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:00:42,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2024-11-13 15:00:42,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1058. [2024-11-13 15:00:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 767 states have (on average 1.6779661016949152) internal successors, (1287), 1053 states have internal predecessors, (1287), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1293 transitions. [2024-11-13 15:00:42,881 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1293 transitions. Word has length 16 [2024-11-13 15:00:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:42,881 INFO L471 AbstractCegarLoop]: Abstraction has 1058 states and 1293 transitions. [2024-11-13 15:00:42,881 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) [2024-11-13 15:00:42,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1293 transitions. [2024-11-13 15:00:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 15:00:42,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:42,882 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:42,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:00:42,883 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:42,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:42,883 INFO L85 PathProgramCache]: Analyzing trace with hash -179577158, now seen corresponding path program 1 times [2024-11-13 15:00:42,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:42,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425243798] [2024-11-13 15:00:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:42,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:42,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:42,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425243798] [2024-11-13 15:00:42,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425243798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:42,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:42,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:00:42,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220554165] [2024-11-13 15:00:42,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:42,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:00:42,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:00:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:42,996 INFO L87 Difference]: Start difference. First operand 1058 states and 1293 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) [2024-11-13 15:00:43,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:43,864 INFO L93 Difference]: Finished difference Result 1124 states and 1348 transitions. [2024-11-13 15:00:43,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:00:43,865 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 [2024-11-13 15:00:43,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:43,868 INFO L225 Difference]: With dead ends: 1124 [2024-11-13 15:00:43,868 INFO L226 Difference]: Without dead ends: 1124 [2024-11-13 15:00:43,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:43,869 INFO L432 NwaCegarLoop]: 915 mSDtfsCounter, 1274 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:43,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 1826 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 15:00:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-11-13 15:00:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1035. [2024-11-13 15:00:43,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 767 states have (on average 1.6479791395045633) internal successors, (1264), 1030 states have internal predecessors, (1264), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1270 transitions. [2024-11-13 15:00:43,888 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1270 transitions. Word has length 19 [2024-11-13 15:00:43,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:43,888 INFO L471 AbstractCegarLoop]: Abstraction has 1035 states and 1270 transitions. [2024-11-13 15:00:43,888 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) [2024-11-13 15:00:43,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1270 transitions. [2024-11-13 15:00:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 15:00:43,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:43,889 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:43,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:00:43,889 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:43,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:43,890 INFO L85 PathProgramCache]: Analyzing trace with hash -179577157, now seen corresponding path program 1 times [2024-11-13 15:00:43,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:43,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393343729] [2024-11-13 15:00:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:43,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:43,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:43,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393343729] [2024-11-13 15:00:43,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393343729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:43,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:43,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:00:43,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710790457] [2024-11-13 15:00:43,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:43,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:00:43,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:43,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:00:43,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:43,970 INFO L87 Difference]: Start difference. First operand 1035 states and 1270 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2024-11-13 15:00:44,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:44,003 INFO L93 Difference]: Finished difference Result 960 states and 1167 transitions. [2024-11-13 15:00:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:00:44,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 [2024-11-13 15:00:44,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:44,007 INFO L225 Difference]: With dead ends: 960 [2024-11-13 15:00:44,007 INFO L226 Difference]: Without dead ends: 960 [2024-11-13 15:00:44,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:44,008 INFO L432 NwaCegarLoop]: 920 mSDtfsCounter, 61 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:44,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1787 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:00:44,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-11-13 15:00:44,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 960. [2024-11-13 15:00:44,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 704 states have (on average 1.6491477272727273) internal successors, (1161), 955 states have internal predecessors, (1161), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1167 transitions. [2024-11-13 15:00:44,025 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1167 transitions. Word has length 19 [2024-11-13 15:00:44,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:44,025 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1167 transitions. [2024-11-13 15:00:44,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2024-11-13 15:00:44,026 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1167 transitions. [2024-11-13 15:00:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 15:00:44,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:44,026 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:44,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 15:00:44,027 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr339REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:44,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:44,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1695091963, now seen corresponding path program 1 times [2024-11-13 15:00:44,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:44,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236562152] [2024-11-13 15:00:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:44,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:44,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:44,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236562152] [2024-11-13 15:00:44,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236562152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:44,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:44,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:00:44,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051502591] [2024-11-13 15:00:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:44,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:00:44,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:44,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:00:44,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:44,101 INFO L87 Difference]: Start difference. First operand 960 states and 1167 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2024-11-13 15:00:44,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:44,132 INFO L93 Difference]: Finished difference Result 879 states and 1057 transitions. [2024-11-13 15:00:44,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:00:44,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 [2024-11-13 15:00:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:44,135 INFO L225 Difference]: With dead ends: 879 [2024-11-13 15:00:44,135 INFO L226 Difference]: Without dead ends: 879 [2024-11-13 15:00:44,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:44,136 INFO L432 NwaCegarLoop]: 817 mSDtfsCounter, 33 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:44,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1609 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:00:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2024-11-13 15:00:44,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 879. [2024-11-13 15:00:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 635 states have (on average 1.6551181102362205) internal successors, (1051), 874 states have internal predecessors, (1051), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1057 transitions. [2024-11-13 15:00:44,154 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1057 transitions. Word has length 19 [2024-11-13 15:00:44,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:44,155 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1057 transitions. [2024-11-13 15:00:44,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2024-11-13 15:00:44,157 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1057 transitions. [2024-11-13 15:00:44,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 15:00:44,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:44,158 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] [2024-11-13 15:00:44,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 15:00:44,159 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:44,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:44,159 INFO L85 PathProgramCache]: Analyzing trace with hash -774800042, now seen corresponding path program 1 times [2024-11-13 15:00:44,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:44,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152941916] [2024-11-13 15:00:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:44,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:44,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:44,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152941916] [2024-11-13 15:00:44,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152941916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:44,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:44,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:44,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084687076] [2024-11-13 15:00:44,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:44,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:00:44,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:44,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:00:44,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:44,261 INFO L87 Difference]: Start difference. First operand 879 states and 1057 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2024-11-13 15:00:44,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:44,334 INFO L93 Difference]: Finished difference Result 861 states and 1032 transitions. [2024-11-13 15:00:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:00:44,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 [2024-11-13 15:00:44,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:44,337 INFO L225 Difference]: With dead ends: 861 [2024-11-13 15:00:44,338 INFO L226 Difference]: Without dead ends: 861 [2024-11-13 15:00:44,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:44,338 INFO L432 NwaCegarLoop]: 782 mSDtfsCounter, 41 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:44,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2318 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:00:44,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2024-11-13 15:00:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 858. [2024-11-13 15:00:44,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 621 states have (on average 1.6473429951690821) internal successors, (1023), 853 states have internal predecessors, (1023), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1029 transitions. [2024-11-13 15:00:44,357 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1029 transitions. Word has length 21 [2024-11-13 15:00:44,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:44,358 INFO L471 AbstractCegarLoop]: Abstraction has 858 states and 1029 transitions. [2024-11-13 15:00:44,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2024-11-13 15:00:44,358 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1029 transitions. [2024-11-13 15:00:44,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 15:00:44,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:44,359 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:44,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 15:00:44,359 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:44,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash -523088604, now seen corresponding path program 1 times [2024-11-13 15:00:44,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:44,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349902253] [2024-11-13 15:00:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:44,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:44,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:44,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349902253] [2024-11-13 15:00:44,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349902253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:44,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:44,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:00:44,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256004567] [2024-11-13 15:00:44,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:44,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:00:44,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:44,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:00:44,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:44,574 INFO L87 Difference]: Start difference. First operand 858 states and 1029 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:45,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:45,576 INFO L93 Difference]: Finished difference Result 1180 states and 1424 transitions. [2024-11-13 15:00:45,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:00:45,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-13 15:00:45,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:45,581 INFO L225 Difference]: With dead ends: 1180 [2024-11-13 15:00:45,581 INFO L226 Difference]: Without dead ends: 1180 [2024-11-13 15:00:45,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:45,582 INFO L432 NwaCegarLoop]: 885 mSDtfsCounter, 647 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:45,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1893 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 15:00:45,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2024-11-13 15:00:45,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 854. [2024-11-13 15:00:45,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 621 states have (on average 1.640901771336554) internal successors, (1019), 849 states have internal predecessors, (1019), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1025 transitions. [2024-11-13 15:00:45,601 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1025 transitions. Word has length 35 [2024-11-13 15:00:45,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:45,602 INFO L471 AbstractCegarLoop]: Abstraction has 854 states and 1025 transitions. [2024-11-13 15:00:45,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:45,602 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1025 transitions. [2024-11-13 15:00:45,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 15:00:45,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:45,605 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:45,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 15:00:45,605 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr376REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:45,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:45,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1953401108, now seen corresponding path program 1 times [2024-11-13 15:00:45,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:45,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90060872] [2024-11-13 15:00:45,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:45,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:45,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:45,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90060872] [2024-11-13 15:00:45,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90060872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:45,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:45,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:45,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951970378] [2024-11-13 15:00:45,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:45,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:00:45,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:45,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:00:45,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:45,757 INFO L87 Difference]: Start difference. First operand 854 states and 1025 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) [2024-11-13 15:00:45,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:45,818 INFO L93 Difference]: Finished difference Result 854 states and 1017 transitions. [2024-11-13 15:00:45,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:00:45,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) Word has length 62 [2024-11-13 15:00:45,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:45,821 INFO L225 Difference]: With dead ends: 854 [2024-11-13 15:00:45,822 INFO L226 Difference]: Without dead ends: 854 [2024-11-13 15:00:45,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:45,823 INFO L432 NwaCegarLoop]: 777 mSDtfsCounter, 27 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:45,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2294 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:00:45,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2024-11-13 15:00:45,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2024-11-13 15:00:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 621 states have (on average 1.6280193236714975) internal successors, (1011), 849 states have internal predecessors, (1011), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1017 transitions. [2024-11-13 15:00:45,857 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1017 transitions. Word has length 62 [2024-11-13 15:00:45,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:45,857 INFO L471 AbstractCegarLoop]: Abstraction has 854 states and 1017 transitions. [2024-11-13 15:00:45,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) [2024-11-13 15:00:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1017 transitions. [2024-11-13 15:00:45,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-13 15:00:45,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:45,860 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:45,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 15:00:45,860 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:45,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:45,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1535646678, now seen corresponding path program 1 times [2024-11-13 15:00:45,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:45,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013662852] [2024-11-13 15:00:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:45,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:46,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:46,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013662852] [2024-11-13 15:00:46,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013662852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:46,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:46,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:46,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858487209] [2024-11-13 15:00:46,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:46,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:00:46,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:46,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:00:46,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:46,038 INFO L87 Difference]: Start difference. First operand 854 states and 1017 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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) [2024-11-13 15:00:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:46,106 INFO L93 Difference]: Finished difference Result 854 states and 1013 transitions. [2024-11-13 15:00:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:00:46,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-13 15:00:46,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:46,111 INFO L225 Difference]: With dead ends: 854 [2024-11-13 15:00:46,111 INFO L226 Difference]: Without dead ends: 854 [2024-11-13 15:00:46,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:46,112 INFO L432 NwaCegarLoop]: 773 mSDtfsCounter, 21 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:46,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2288 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:00:46,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2024-11-13 15:00:46,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2024-11-13 15:00:46,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 621 states have (on average 1.6215780998389695) internal successors, (1007), 849 states have internal predecessors, (1007), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1013 transitions. [2024-11-13 15:00:46,130 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1013 transitions. Word has length 69 [2024-11-13 15:00:46,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:46,130 INFO L471 AbstractCegarLoop]: Abstraction has 854 states and 1013 transitions. [2024-11-13 15:00:46,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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) [2024-11-13 15:00:46,131 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1013 transitions. [2024-11-13 15:00:46,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 15:00:46,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:46,133 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:46,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 15:00:46,133 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr376REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:46,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:46,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1787180320, now seen corresponding path program 1 times [2024-11-13 15:00:46,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:46,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452584202] [2024-11-13 15:00:46,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:46,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:46,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:46,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452584202] [2024-11-13 15:00:46,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452584202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:46,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:46,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:00:46,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961791140] [2024-11-13 15:00:46,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:46,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:00:46,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:00:46,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:46,305 INFO L87 Difference]: Start difference. First operand 854 states and 1013 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:46,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:46,391 INFO L93 Difference]: Finished difference Result 1018 states and 1186 transitions. [2024-11-13 15:00:46,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:00:46,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-13 15:00:46,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:46,396 INFO L225 Difference]: With dead ends: 1018 [2024-11-13 15:00:46,396 INFO L226 Difference]: Without dead ends: 1018 [2024-11-13 15:00:46,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:46,397 INFO L432 NwaCegarLoop]: 794 mSDtfsCounter, 198 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:46,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1536 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:00:46,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2024-11-13 15:00:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1008. [2024-11-13 15:00:46,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 775 states have (on average 1.5174193548387096) internal successors, (1176), 1003 states have internal predecessors, (1176), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1182 transitions. [2024-11-13 15:00:46,420 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1182 transitions. Word has length 70 [2024-11-13 15:00:46,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:46,421 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1182 transitions. [2024-11-13 15:00:46,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:46,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1182 transitions. [2024-11-13 15:00:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 15:00:46,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:46,423 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:46,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 15:00:46,423 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:46,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:46,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1807782790, now seen corresponding path program 1 times [2024-11-13 15:00:46,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:46,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882207681] [2024-11-13 15:00:46,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:46,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:47,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882207681] [2024-11-13 15:00:47,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882207681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:47,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:47,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:00:47,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374172968] [2024-11-13 15:00:47,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:47,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:00:47,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:47,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:00:47,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:00:47,039 INFO L87 Difference]: Start difference. First operand 1008 states and 1182 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:47,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:47,274 INFO L93 Difference]: Finished difference Result 1480 states and 1684 transitions. [2024-11-13 15:00:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:00:47,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-13 15:00:47,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:47,280 INFO L225 Difference]: With dead ends: 1480 [2024-11-13 15:00:47,280 INFO L226 Difference]: Without dead ends: 1477 [2024-11-13 15:00:47,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:00:47,281 INFO L432 NwaCegarLoop]: 768 mSDtfsCounter, 727 mSDsluCounter, 3818 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 4586 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:47,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 4586 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:00:47,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2024-11-13 15:00:47,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 909. [2024-11-13 15:00:47,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 676 states have (on average 1.5502958579881656) internal successors, (1048), 904 states have internal predecessors, (1048), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:47,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1054 transitions. [2024-11-13 15:00:47,307 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1054 transitions. Word has length 76 [2024-11-13 15:00:47,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:47,307 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 1054 transitions. [2024-11-13 15:00:47,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:47,307 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1054 transitions. [2024-11-13 15:00:47,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-13 15:00:47,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:47,308 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:47,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 15:00:47,309 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:47,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:47,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1111266443, now seen corresponding path program 1 times [2024-11-13 15:00:47,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:47,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408884703] [2024-11-13 15:00:47,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:47,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:47,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:47,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:47,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408884703] [2024-11-13 15:00:47,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408884703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:47,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:47,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:47,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109919724] [2024-11-13 15:00:47,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:47,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:00:47,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:47,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:00:47,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:47,702 INFO L87 Difference]: Start difference. First operand 909 states and 1054 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:48,614 INFO L93 Difference]: Finished difference Result 908 states and 1053 transitions. [2024-11-13 15:00:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:00:48,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-11-13 15:00:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:48,618 INFO L225 Difference]: With dead ends: 908 [2024-11-13 15:00:48,619 INFO L226 Difference]: Without dead ends: 908 [2024-11-13 15:00:48,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:00:48,620 INFO L432 NwaCegarLoop]: 784 mSDtfsCounter, 2 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:48,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2283 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 15:00:48,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2024-11-13 15:00:48,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 908. [2024-11-13 15:00:48,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 676 states have (on average 1.5488165680473374) internal successors, (1047), 903 states have internal predecessors, (1047), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:48,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1053 transitions. [2024-11-13 15:00:48,640 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1053 transitions. Word has length 85 [2024-11-13 15:00:48,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:48,641 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 1053 transitions. [2024-11-13 15:00:48,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:48,641 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1053 transitions. [2024-11-13 15:00:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-13 15:00:48,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:48,644 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:48,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 15:00:48,644 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:48,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:48,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1111266442, now seen corresponding path program 1 times [2024-11-13 15:00:48,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:48,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477065594] [2024-11-13 15:00:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:48,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:49,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477065594] [2024-11-13 15:00:49,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477065594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:49,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:49,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:49,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111664585] [2024-11-13 15:00:49,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:49,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:00:49,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:49,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:00:49,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:49,294 INFO L87 Difference]: Start difference. First operand 908 states and 1053 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:50,253 INFO L93 Difference]: Finished difference Result 907 states and 1052 transitions. [2024-11-13 15:00:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:00:50,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-11-13 15:00:50,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:50,257 INFO L225 Difference]: With dead ends: 907 [2024-11-13 15:00:50,257 INFO L226 Difference]: Without dead ends: 907 [2024-11-13 15:00:50,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:00:50,262 INFO L432 NwaCegarLoop]: 784 mSDtfsCounter, 1 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:50,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2242 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 15:00:50,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2024-11-13 15:00:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 907. [2024-11-13 15:00:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 675 states have (on average 1.5496296296296297) internal successors, (1046), 902 states have internal predecessors, (1046), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:00:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1052 transitions. [2024-11-13 15:00:50,295 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1052 transitions. Word has length 85 [2024-11-13 15:00:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:50,295 INFO L471 AbstractCegarLoop]: Abstraction has 907 states and 1052 transitions. [2024-11-13 15:00:50,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1052 transitions. [2024-11-13 15:00:50,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-13 15:00:50,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:50,296 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:50,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 15:00:50,296 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:50,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:50,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1673809668, now seen corresponding path program 1 times [2024-11-13 15:00:50,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:50,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337577355] [2024-11-13 15:00:50,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:50,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:50,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:00:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:50,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:50,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337577355] [2024-11-13 15:00:50,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337577355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:50,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:50,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:00:50,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044975078] [2024-11-13 15:00:50,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:50,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:00:50,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:00:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:00:50,752 INFO L87 Difference]: Start difference. First operand 907 states and 1052 transitions. Second operand has 7 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:00:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:51,849 INFO L93 Difference]: Finished difference Result 919 states and 1067 transitions. [2024-11-13 15:00:51,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:00:51,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2024-11-13 15:00:51,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:51,856 INFO L225 Difference]: With dead ends: 919 [2024-11-13 15:00:51,856 INFO L226 Difference]: Without dead ends: 919 [2024-11-13 15:00:51,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:00:51,857 INFO L432 NwaCegarLoop]: 776 mSDtfsCounter, 10 mSDsluCounter, 2756 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:51,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3532 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 15:00:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2024-11-13 15:00:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 913. [2024-11-13 15:00:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 680 states have (on average 1.548529411764706) internal successors, (1053), 907 states have internal predecessors, (1053), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 15:00:51,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1062 transitions. [2024-11-13 15:00:51,878 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1062 transitions. Word has length 93 [2024-11-13 15:00:51,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:51,879 INFO L471 AbstractCegarLoop]: Abstraction has 913 states and 1062 transitions. [2024-11-13 15:00:51,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:00:51,879 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1062 transitions. [2024-11-13 15:00:51,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-13 15:00:51,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:51,880 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:51,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 15:00:51,880 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:51,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:51,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1673809667, now seen corresponding path program 1 times [2024-11-13 15:00:51,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:51,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149113554] [2024-11-13 15:00:51,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:51,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:52,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:00:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:52,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:52,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149113554] [2024-11-13 15:00:52,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149113554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:52,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:52,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:00:52,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178606675] [2024-11-13 15:00:52,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:52,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:00:52,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:52,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:00:52,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:00:52,664 INFO L87 Difference]: Start difference. First operand 913 states and 1062 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:00:53,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:53,831 INFO L93 Difference]: Finished difference Result 913 states and 1061 transitions. [2024-11-13 15:00:53,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:00:53,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2024-11-13 15:00:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:53,835 INFO L225 Difference]: With dead ends: 913 [2024-11-13 15:00:53,835 INFO L226 Difference]: Without dead ends: 913 [2024-11-13 15:00:53,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:00:53,837 INFO L432 NwaCegarLoop]: 780 mSDtfsCounter, 5 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:53,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 3533 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 15:00:53,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2024-11-13 15:00:53,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 913. [2024-11-13 15:00:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 680 states have (on average 1.5470588235294118) internal successors, (1052), 907 states have internal predecessors, (1052), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 15:00:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1061 transitions. [2024-11-13 15:00:53,854 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1061 transitions. Word has length 93 [2024-11-13 15:00:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:53,855 INFO L471 AbstractCegarLoop]: Abstraction has 913 states and 1061 transitions. [2024-11-13 15:00:53,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:00:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1061 transitions. [2024-11-13 15:00:53,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-13 15:00:53,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:53,856 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:53,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 15:00:53,858 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:53,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:53,858 INFO L85 PathProgramCache]: Analyzing trace with hash 276104355, now seen corresponding path program 1 times [2024-11-13 15:00:53,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:53,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549079024] [2024-11-13 15:00:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:53,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:54,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:00:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:54,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:54,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549079024] [2024-11-13 15:00:54,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549079024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:00:54,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814505225] [2024-11-13 15:00:54,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:54,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:54,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:54,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:54,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:00:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:54,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:00:54,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:54,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:00:55,053 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 15:00:55,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 15:00:55,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:00:55,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:00:55,473 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:00:55,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:00:55,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:00:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:55,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:00:55,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814505225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:00:55,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:00:55,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-13 15:00:55,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968096495] [2024-11-13 15:00:55,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:00:55,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:00:55,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:55,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:00:55,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=321, Unknown=5, NotChecked=0, Total=380 [2024-11-13 15:00:55,671 INFO L87 Difference]: Start difference. First operand 913 states and 1061 transitions. Second operand has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:00:58,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:58,708 INFO L93 Difference]: Finished difference Result 920 states and 1068 transitions. [2024-11-13 15:00:58,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:00:58,708 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 94 [2024-11-13 15:00:58,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:58,712 INFO L225 Difference]: With dead ends: 920 [2024-11-13 15:00:58,712 INFO L226 Difference]: Without dead ends: 920 [2024-11-13 15:00:58,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=508, Unknown=5, NotChecked=0, Total=600 [2024-11-13 15:00:58,713 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 696 mSDsluCounter, 5693 mSDsCounter, 0 mSdLazyCounter, 4014 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 6182 SdHoareTripleChecker+Invalid, 4028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:58,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 6182 Invalid, 4028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4014 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 15:00:58,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-13 15:00:58,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 917. [2024-11-13 15:00:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 684 states have (on average 1.543859649122807) internal successors, (1056), 910 states have internal predecessors, (1056), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:00:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1063 transitions. [2024-11-13 15:00:58,737 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1063 transitions. Word has length 94 [2024-11-13 15:00:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:58,737 INFO L471 AbstractCegarLoop]: Abstraction has 917 states and 1063 transitions. [2024-11-13 15:00:58,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:00:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1063 transitions. [2024-11-13 15:00:58,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-13 15:00:58,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:58,739 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:58,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:00:58,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 15:00:58,940 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:00:58,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:58,941 INFO L85 PathProgramCache]: Analyzing trace with hash 276104356, now seen corresponding path program 1 times [2024-11-13 15:00:58,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:58,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998173586] [2024-11-13 15:00:58,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:58,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:59,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:00:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:59,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:59,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998173586] [2024-11-13 15:00:59,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998173586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:00:59,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729190418] [2024-11-13 15:00:59,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:59,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:59,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:59,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:59,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:01:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:00,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 15:01:00,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:00,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:01:00,337 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:01:00,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:01:00,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:01:00,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:01:00,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:01:00,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:01:00,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:01:00,654 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:00,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:01:00,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:01:00,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:01:00,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:01:00,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:00,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:00,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729190418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:00,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:01:00,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-13 15:01:00,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465190269] [2024-11-13 15:01:00,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:00,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:01:00,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:00,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:01:00,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=385, Unknown=12, NotChecked=0, Total=462 [2024-11-13 15:01:00,950 INFO L87 Difference]: Start difference. First operand 917 states and 1063 transitions. Second operand has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:04,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:04,034 INFO L93 Difference]: Finished difference Result 919 states and 1067 transitions. [2024-11-13 15:01:04,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:01:04,035 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 94 [2024-11-13 15:01:04,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:04,038 INFO L225 Difference]: With dead ends: 919 [2024-11-13 15:01:04,038 INFO L226 Difference]: Without dead ends: 919 [2024-11-13 15:01:04,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=584, Unknown=12, NotChecked=0, Total=702 [2024-11-13 15:01:04,039 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 701 mSDsluCounter, 4448 mSDsCounter, 0 mSdLazyCounter, 4484 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 4940 SdHoareTripleChecker+Invalid, 4503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:04,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 4940 Invalid, 4503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 4484 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 15:01:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2024-11-13 15:01:04,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 910. [2024-11-13 15:01:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 679 states have (on average 1.544918998527246) internal successors, (1049), 904 states have internal predecessors, (1049), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:01:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1055 transitions. [2024-11-13 15:01:04,055 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1055 transitions. Word has length 94 [2024-11-13 15:01:04,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:04,055 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1055 transitions. [2024-11-13 15:01:04,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:04,055 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1055 transitions. [2024-11-13 15:01:04,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-13 15:01:04,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:04,056 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:04,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:01:04,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:04,261 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:04,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:04,262 INFO L85 PathProgramCache]: Analyzing trace with hash 107118756, now seen corresponding path program 1 times [2024-11-13 15:01:04,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:04,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081136953] [2024-11-13 15:01:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:04,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:05,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:05,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:05,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:05,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081136953] [2024-11-13 15:01:05,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081136953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:05,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:05,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 15:01:05,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018666895] [2024-11-13 15:01:05,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:05,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:01:05,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:05,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:01:05,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:01:05,142 INFO L87 Difference]: Start difference. First operand 910 states and 1055 transitions. Second operand has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:06,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:06,992 INFO L93 Difference]: Finished difference Result 923 states and 1071 transitions. [2024-11-13 15:01:06,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:01:06,993 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2024-11-13 15:01:06,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:06,997 INFO L225 Difference]: With dead ends: 923 [2024-11-13 15:01:06,997 INFO L226 Difference]: Without dead ends: 923 [2024-11-13 15:01:06,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:01:06,998 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 710 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 2758 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 2769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:06,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 3513 Invalid, 2769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2758 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 15:01:06,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2024-11-13 15:01:07,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 919. [2024-11-13 15:01:07,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 687 states have (on average 1.5414847161572052) internal successors, (1059), 912 states have internal predecessors, (1059), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:01:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1066 transitions. [2024-11-13 15:01:07,013 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1066 transitions. Word has length 96 [2024-11-13 15:01:07,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:07,014 INFO L471 AbstractCegarLoop]: Abstraction has 919 states and 1066 transitions. [2024-11-13 15:01:07,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:07,014 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1066 transitions. [2024-11-13 15:01:07,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-13 15:01:07,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:07,015 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:07,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 15:01:07,015 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:07,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:07,016 INFO L85 PathProgramCache]: Analyzing trace with hash 107118755, now seen corresponding path program 1 times [2024-11-13 15:01:07,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:07,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249148983] [2024-11-13 15:01:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:07,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:07,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:07,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249148983] [2024-11-13 15:01:07,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249148983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:07,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:07,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-13 15:01:07,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110316494] [2024-11-13 15:01:07,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:07,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:01:07,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:07,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:01:07,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:01:07,643 INFO L87 Difference]: Start difference. First operand 919 states and 1066 transitions. Second operand has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:09,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:09,735 INFO L93 Difference]: Finished difference Result 922 states and 1070 transitions. [2024-11-13 15:01:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:01:09,736 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2024-11-13 15:01:09,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:09,739 INFO L225 Difference]: With dead ends: 922 [2024-11-13 15:01:09,739 INFO L226 Difference]: Without dead ends: 922 [2024-11-13 15:01:09,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:01:09,740 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 706 mSDsluCounter, 5228 mSDsCounter, 0 mSdLazyCounter, 3692 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 5718 SdHoareTripleChecker+Invalid, 3704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:09,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 5718 Invalid, 3704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3692 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 15:01:09,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-13 15:01:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 919. [2024-11-13 15:01:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 687 states have (on average 1.5400291120815137) internal successors, (1058), 912 states have internal predecessors, (1058), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:01:09,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1065 transitions. [2024-11-13 15:01:09,754 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1065 transitions. Word has length 96 [2024-11-13 15:01:09,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:09,755 INFO L471 AbstractCegarLoop]: Abstraction has 919 states and 1065 transitions. [2024-11-13 15:01:09,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1065 transitions. [2024-11-13 15:01:09,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-13 15:01:09,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:09,756 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:09,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-13 15:01:09,757 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:09,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:09,757 INFO L85 PathProgramCache]: Analyzing trace with hash 563099549, now seen corresponding path program 1 times [2024-11-13 15:01:09,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:09,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306639686] [2024-11-13 15:01:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:09,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:10,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:10,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:10,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306639686] [2024-11-13 15:01:10,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306639686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:10,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51348865] [2024-11-13 15:01:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:10,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:10,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:10,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:10,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:01:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:11,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 15:01:11,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:11,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:01:11,205 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:01:11,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:01:11,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:01:11,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:01:11,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:01:11,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:01:11,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:01:11,451 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:11,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:01:11,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:01:11,543 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:11,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:01:11,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:01:11,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:01:11,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:01:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:11,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:11,731 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1089 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1089) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4))) (forall ((v_ArrVal_1090 (Array Int Int)) (v_ArrVal_1089 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1089) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-13 15:01:11,810 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1089 (Array Int Int)) (v_ArrVal_1096 (Array Int Int)) (v_ArrVal_1095 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1095) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1096) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1089) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1090 (Array Int Int)) (v_ArrVal_1089 (Array Int Int)) (v_ArrVal_1096 (Array Int Int)) (v_ArrVal_1095 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1096))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1095) .cse1 v_ArrVal_1089) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2024-11-13 15:01:11,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51348865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:11,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:01:11,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 17 [2024-11-13 15:01:11,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256105843] [2024-11-13 15:01:11,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:11,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:01:11,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:01:11,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=347, Unknown=10, NotChecked=78, Total=506 [2024-11-13 15:01:11,815 INFO L87 Difference]: Start difference. First operand 919 states and 1065 transitions. Second operand has 18 states, 15 states have (on average 9.8) internal successors, (147), 17 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:15,186 INFO L93 Difference]: Finished difference Result 921 states and 1069 transitions. [2024-11-13 15:01:15,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:01:15,186 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 9.8) internal successors, (147), 17 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 97 [2024-11-13 15:01:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:15,189 INFO L225 Difference]: With dead ends: 921 [2024-11-13 15:01:15,189 INFO L226 Difference]: Without dead ends: 921 [2024-11-13 15:01:15,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=583, Unknown=11, NotChecked=102, Total=812 [2024-11-13 15:01:15,190 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 696 mSDsluCounter, 4512 mSDsCounter, 0 mSdLazyCounter, 4342 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 5003 SdHoareTripleChecker+Invalid, 4357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:15,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 5003 Invalid, 4357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4342 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-13 15:01:15,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-11-13 15:01:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 918. [2024-11-13 15:01:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 687 states have (on average 1.5385735080058225) internal successors, (1057), 911 states have internal predecessors, (1057), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:01:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1064 transitions. [2024-11-13 15:01:15,205 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1064 transitions. Word has length 97 [2024-11-13 15:01:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:15,205 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1064 transitions. [2024-11-13 15:01:15,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 9.8) internal successors, (147), 17 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:15,206 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1064 transitions. [2024-11-13 15:01:15,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-13 15:01:15,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:15,207 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:15,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:01:15,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 15:01:15,408 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:15,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:15,408 INFO L85 PathProgramCache]: Analyzing trace with hash 563099548, now seen corresponding path program 1 times [2024-11-13 15:01:15,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:15,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508701219] [2024-11-13 15:01:15,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:15,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:15,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:16,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:16,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508701219] [2024-11-13 15:01:16,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508701219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:16,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201794004] [2024-11-13 15:01:16,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:16,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:16,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:16,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:16,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:01:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:16,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 15:01:16,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:16,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:01:16,424 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 15:01:16,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 15:01:16,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:01:16,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:01:16,744 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:16,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:01:16,863 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:16,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:01:16,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:01:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:16,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:16,926 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1251 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1251) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-13 15:01:16,987 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1254 (Array Int Int)) (v_ArrVal_1251 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1254))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1251)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-13 15:01:16,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201794004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:16,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:01:16,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2024-11-13 15:01:16,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467377981] [2024-11-13 15:01:16,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:16,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 15:01:16,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:16,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 15:01:16,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=429, Unknown=7, NotChecked=86, Total=600 [2024-11-13 15:01:16,990 INFO L87 Difference]: Start difference. First operand 918 states and 1064 transitions. Second operand has 22 states, 19 states have (on average 8.105263157894736) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:19,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:19,366 INFO L93 Difference]: Finished difference Result 920 states and 1068 transitions. [2024-11-13 15:01:19,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:01:19,367 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 8.105263157894736) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 97 [2024-11-13 15:01:19,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:19,369 INFO L225 Difference]: With dead ends: 920 [2024-11-13 15:01:19,369 INFO L226 Difference]: Without dead ends: 920 [2024-11-13 15:01:19,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=597, Unknown=7, NotChecked=102, Total=812 [2024-11-13 15:01:19,370 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 687 mSDsluCounter, 5704 mSDsCounter, 0 mSdLazyCounter, 3982 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 6192 SdHoareTripleChecker+Invalid, 3994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:19,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 6192 Invalid, 3994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3982 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 15:01:19,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-13 15:01:19,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 908. [2024-11-13 15:01:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 679 states have (on average 1.5419734904270987) internal successors, (1047), 902 states have internal predecessors, (1047), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:01:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1053 transitions. [2024-11-13 15:01:19,383 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1053 transitions. Word has length 97 [2024-11-13 15:01:19,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:19,383 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 1053 transitions. [2024-11-13 15:01:19,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 8.105263157894736) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1053 transitions. [2024-11-13 15:01:19,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-13 15:01:19,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:19,384 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:19,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 15:01:19,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 15:01:19,585 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:19,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:19,585 INFO L85 PathProgramCache]: Analyzing trace with hash 14767811, now seen corresponding path program 1 times [2024-11-13 15:01:19,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:19,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771235760] [2024-11-13 15:01:19,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:19,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:20,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:20,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:20,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771235760] [2024-11-13 15:01:20,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771235760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:20,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:20,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-13 15:01:20,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978964216] [2024-11-13 15:01:20,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:20,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 15:01:20,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:20,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 15:01:20,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:01:20,222 INFO L87 Difference]: Start difference. First operand 908 states and 1053 transitions. Second operand has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:22,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:22,081 INFO L93 Difference]: Finished difference Result 924 states and 1072 transitions. [2024-11-13 15:01:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:01:22,081 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2024-11-13 15:01:22,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:22,083 INFO L225 Difference]: With dead ends: 924 [2024-11-13 15:01:22,083 INFO L226 Difference]: Without dead ends: 924 [2024-11-13 15:01:22,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:01:22,084 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 715 mSDsluCounter, 3816 mSDsCounter, 0 mSdLazyCounter, 2775 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 4304 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:22,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 4304 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2775 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 15:01:22,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2024-11-13 15:01:22,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 920. [2024-11-13 15:01:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 690 states have (on average 1.536231884057971) internal successors, (1060), 913 states have internal predecessors, (1060), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:01:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1067 transitions. [2024-11-13 15:01:22,094 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1067 transitions. Word has length 99 [2024-11-13 15:01:22,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:22,094 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1067 transitions. [2024-11-13 15:01:22,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1067 transitions. [2024-11-13 15:01:22,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-13 15:01:22,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:22,095 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:22,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-13 15:01:22,095 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:22,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:22,095 INFO L85 PathProgramCache]: Analyzing trace with hash 14767812, now seen corresponding path program 1 times [2024-11-13 15:01:22,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:22,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592303933] [2024-11-13 15:01:22,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:22,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:22,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:22,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:22,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592303933] [2024-11-13 15:01:22,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592303933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:22,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:22,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-13 15:01:22,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426958413] [2024-11-13 15:01:22,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:22,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:01:22,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:01:22,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:01:22,948 INFO L87 Difference]: Start difference. First operand 920 states and 1067 transitions. Second operand has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:24,760 INFO L93 Difference]: Finished difference Result 923 states and 1071 transitions. [2024-11-13 15:01:24,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:01:24,760 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2024-11-13 15:01:24,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:24,762 INFO L225 Difference]: With dead ends: 923 [2024-11-13 15:01:24,762 INFO L226 Difference]: Without dead ends: 923 [2024-11-13 15:01:24,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:01:24,763 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 707 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 2865 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 3405 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:24,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 3405 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2865 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 15:01:24,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2024-11-13 15:01:24,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 920. [2024-11-13 15:01:24,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 690 states have (on average 1.5347826086956522) internal successors, (1059), 913 states have internal predecessors, (1059), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:01:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1066 transitions. [2024-11-13 15:01:24,775 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1066 transitions. Word has length 99 [2024-11-13 15:01:24,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:24,775 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1066 transitions. [2024-11-13 15:01:24,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:24,776 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1066 transitions. [2024-11-13 15:01:24,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-13 15:01:24,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:24,777 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:24,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-13 15:01:24,777 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:24,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:24,778 INFO L85 PathProgramCache]: Analyzing trace with hash -842985174, now seen corresponding path program 1 times [2024-11-13 15:01:24,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:24,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926184197] [2024-11-13 15:01:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:24,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:25,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:25,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:25,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926184197] [2024-11-13 15:01:25,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926184197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:25,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962668969] [2024-11-13 15:01:25,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:25,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:25,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:25,482 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:25,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:01:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:25,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 15:01:25,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:25,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:01:25,962 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 15:01:25,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 15:01:26,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:01:26,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:01:26,292 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:26,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:01:26,418 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:26,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:01:26,509 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:26,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:01:26,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:01:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:26,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:26,585 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1566 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1566) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-13 15:01:26,593 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1566 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1566) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-13 15:01:26,605 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1566 (Array Int Int)) (v_ArrVal_1565 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1565))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1566)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-13 15:01:26,694 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1566 (Array Int Int)) (v_ArrVal_1565 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1569))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1565)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1566)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-13 15:01:26,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962668969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:26,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:01:26,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2024-11-13 15:01:26,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145023920] [2024-11-13 15:01:26,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:26,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 15:01:26,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:26,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 15:01:26,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=509, Unknown=10, NotChecked=196, Total=812 [2024-11-13 15:01:26,698 INFO L87 Difference]: Start difference. First operand 920 states and 1066 transitions. Second operand has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:29,270 INFO L93 Difference]: Finished difference Result 922 states and 1070 transitions. [2024-11-13 15:01:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:01:29,270 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 100 [2024-11-13 15:01:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:29,272 INFO L225 Difference]: With dead ends: 922 [2024-11-13 15:01:29,273 INFO L226 Difference]: Without dead ends: 922 [2024-11-13 15:01:29,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=693, Unknown=10, NotChecked=228, Total=1056 [2024-11-13 15:01:29,274 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 684 mSDsluCounter, 5673 mSDsCounter, 0 mSdLazyCounter, 3998 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 6160 SdHoareTripleChecker+Invalid, 4013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:29,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 6160 Invalid, 4013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3998 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-13 15:01:29,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-13 15:01:29,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 919. [2024-11-13 15:01:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 690 states have (on average 1.5333333333333334) internal successors, (1058), 912 states have internal predecessors, (1058), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:01:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1065 transitions. [2024-11-13 15:01:29,287 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1065 transitions. Word has length 100 [2024-11-13 15:01:29,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:29,287 INFO L471 AbstractCegarLoop]: Abstraction has 919 states and 1065 transitions. [2024-11-13 15:01:29,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:29,288 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1065 transitions. [2024-11-13 15:01:29,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-13 15:01:29,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:29,289 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:29,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 15:01:29,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 15:01:29,490 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:29,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:29,490 INFO L85 PathProgramCache]: Analyzing trace with hash -842985173, now seen corresponding path program 1 times [2024-11-13 15:01:29,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:29,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199845423] [2024-11-13 15:01:29,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:29,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:30,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:30,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:30,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199845423] [2024-11-13 15:01:30,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199845423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:30,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997506300] [2024-11-13 15:01:30,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:30,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:30,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:30,512 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:30,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:01:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:30,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 15:01:30,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:30,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:01:30,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:01:30,992 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:01:30,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:01:31,027 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 19 treesize of output 1 [2024-11-13 15:01:31,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:01:31,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:01:31,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:01:31,260 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:31,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:01:31,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:01:31,355 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:31,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:01:31,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:01:31,451 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:31,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:01:31,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 22 [2024-11-13 15:01:31,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:01:31,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2024-11-13 15:01:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:31,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:31,830 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1739 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1739))) (or (< (+ (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0) (forall ((v_ArrVal_1742 (Array Int Int)) (v_ArrVal_1741 (Array Int Int)) (v_ArrVal_1740 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1740))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ 12 (select (select (store .cse0 .cse2 v_ArrVal_1742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1741) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))) (forall ((v_ArrVal_1739 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1739))) (or (forall ((v_ArrVal_1742 (Array Int Int)) (v_ArrVal_1740 (Array Int Int))) (<= 0 (+ 8 (select (select (store .cse4 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1740) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (< (+ (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0)))))) is different from false [2024-11-13 15:01:31,874 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_1739 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_1739))) (or (forall ((v_ArrVal_1742 (Array Int Int)) (v_ArrVal_1740 (Array Int Int))) (<= 0 (+ (select (select (store .cse0 (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_1740) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 8))) (< (+ (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 4) 0)))) (forall ((v_ArrVal_1739 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_1739))) (or (forall ((v_ArrVal_1742 (Array Int Int)) (v_ArrVal_1741 (Array Int Int)) (v_ArrVal_1740 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_1740))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store .cse3 .cse4 v_ArrVal_1742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 12) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1741) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (< (+ (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 4) 0))))))) is different from false [2024-11-13 15:01:32,004 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1747 (Array Int Int)) (v_ArrVal_1739 (Array Int Int)) (v_ArrVal_1748 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1747))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse0 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1748) .cse5 v_ArrVal_1739))) (or (< (+ (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0) (forall ((v_ArrVal_1742 (Array Int Int)) (v_ArrVal_1741 (Array Int Int)) (v_ArrVal_1740 (Array Int Int))) (let ((.cse3 (store .cse4 .cse5 v_ArrVal_1740))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store .cse0 .cse2 v_ArrVal_1742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1741) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))))) (forall ((v_ArrVal_1747 (Array Int Int)) (v_ArrVal_1739 (Array Int Int)) (v_ArrVal_1748 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1747))) (let ((.cse8 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse6 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1748) .cse8 v_ArrVal_1739))) (or (forall ((v_ArrVal_1742 (Array Int Int)) (v_ArrVal_1740 (Array Int Int))) (<= 0 (+ (select (select (store .cse6 (select (select (store .cse7 .cse8 v_ArrVal_1740) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8))) (< (+ (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0)))))))) is different from false [2024-11-13 15:01:32,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997506300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:32,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:01:32,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2024-11-13 15:01:32,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4191092] [2024-11-13 15:01:32,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:32,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 15:01:32,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:32,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 15:01:32,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=661, Unknown=3, NotChecked=162, Total=930 [2024-11-13 15:01:32,013 INFO L87 Difference]: Start difference. First operand 919 states and 1065 transitions. Second operand has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:36,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:36,350 INFO L93 Difference]: Finished difference Result 921 states and 1069 transitions. [2024-11-13 15:01:36,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:01:36,351 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 100 [2024-11-13 15:01:36,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:36,352 INFO L225 Difference]: With dead ends: 921 [2024-11-13 15:01:36,352 INFO L226 Difference]: Without dead ends: 921 [2024-11-13 15:01:36,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=175, Invalid=1024, Unknown=3, NotChecked=204, Total=1406 [2024-11-13 15:01:36,353 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 692 mSDsluCounter, 6422 mSDsCounter, 0 mSdLazyCounter, 6345 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 6912 SdHoareTripleChecker+Invalid, 6362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 6345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:36,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 6912 Invalid, 6362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 6345 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-13 15:01:36,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-11-13 15:01:36,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 906. [2024-11-13 15:01:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 679 states have (on average 1.5390279823269515) internal successors, (1045), 900 states have internal predecessors, (1045), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:01:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1051 transitions. [2024-11-13 15:01:36,369 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1051 transitions. Word has length 100 [2024-11-13 15:01:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:36,370 INFO L471 AbstractCegarLoop]: Abstraction has 906 states and 1051 transitions. [2024-11-13 15:01:36,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1051 transitions. [2024-11-13 15:01:36,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-13 15:01:36,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:36,372 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:36,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:01:36,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-13 15:01:36,572 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:36,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:36,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1861838794, now seen corresponding path program 1 times [2024-11-13 15:01:36,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:36,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050823238] [2024-11-13 15:01:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:36,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:37,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:37,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:37,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050823238] [2024-11-13 15:01:37,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050823238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:37,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:37,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-13 15:01:37,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073415046] [2024-11-13 15:01:37,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:37,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:01:37,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:37,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:01:37,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:01:37,144 INFO L87 Difference]: Start difference. First operand 906 states and 1051 transitions. Second operand has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:38,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:38,973 INFO L93 Difference]: Finished difference Result 925 states and 1073 transitions. [2024-11-13 15:01:38,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:01:38,973 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2024-11-13 15:01:38,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:38,974 INFO L225 Difference]: With dead ends: 925 [2024-11-13 15:01:38,975 INFO L226 Difference]: Without dead ends: 925 [2024-11-13 15:01:38,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-13 15:01:38,975 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 715 mSDsluCounter, 4747 mSDsCounter, 0 mSdLazyCounter, 3345 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 5237 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:38,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 5237 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3345 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 15:01:38,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-11-13 15:01:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 921. [2024-11-13 15:01:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 693 states have (on average 1.531024531024531) internal successors, (1061), 914 states have internal predecessors, (1061), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:01:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1068 transitions. [2024-11-13 15:01:38,992 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1068 transitions. Word has length 102 [2024-11-13 15:01:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:38,992 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1068 transitions. [2024-11-13 15:01:38,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1068 transitions. [2024-11-13 15:01:38,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-13 15:01:38,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:38,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:38,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-13 15:01:38,994 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:38,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:38,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1861838795, now seen corresponding path program 1 times [2024-11-13 15:01:38,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:38,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092002586] [2024-11-13 15:01:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:38,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:40,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:40,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:40,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:40,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092002586] [2024-11-13 15:01:40,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092002586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:40,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:40,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-13 15:01:40,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118678008] [2024-11-13 15:01:40,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:40,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:01:40,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:01:40,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:01:40,075 INFO L87 Difference]: Start difference. First operand 921 states and 1068 transitions. Second operand has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:41,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:41,945 INFO L93 Difference]: Finished difference Result 924 states and 1072 transitions. [2024-11-13 15:01:41,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:01:41,948 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2024-11-13 15:01:41,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:41,949 INFO L225 Difference]: With dead ends: 924 [2024-11-13 15:01:41,949 INFO L226 Difference]: Without dead ends: 924 [2024-11-13 15:01:41,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:01:41,950 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 709 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 2852 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:41,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 3438 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2852 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 15:01:41,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2024-11-13 15:01:41,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 921. [2024-11-13 15:01:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 693 states have (on average 1.5295815295815296) internal successors, (1060), 914 states have internal predecessors, (1060), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:01:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1067 transitions. [2024-11-13 15:01:41,960 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1067 transitions. Word has length 102 [2024-11-13 15:01:41,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:41,960 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1067 transitions. [2024-11-13 15:01:41,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1067 transitions. [2024-11-13 15:01:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:01:41,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:41,961 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:41,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-13 15:01:41,961 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:41,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:41,962 INFO L85 PathProgramCache]: Analyzing trace with hash -696893437, now seen corresponding path program 1 times [2024-11-13 15:01:41,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:41,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079415833] [2024-11-13 15:01:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:41,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:42,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:42,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:42,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079415833] [2024-11-13 15:01:42,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079415833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:42,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733172294] [2024-11-13 15:01:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:42,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:42,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:42,762 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:42,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:01:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:43,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 15:01:43,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:43,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:01:43,196 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 15:01:43,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 15:01:43,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:01:43,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:01:43,500 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:43,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:01:43,609 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:43,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:01:43,669 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:43,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:01:43,738 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:43,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:01:43,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:01:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:43,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:43,895 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2085 (Array Int Int)) (v_ArrVal_2084 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2084))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2085)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-13 15:01:43,903 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2085 (Array Int Int)) (v_ArrVal_2084 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2084))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2085)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-13 15:01:44,065 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2083 (Array Int Int)) (v_ArrVal_2088 (Array Int Int)) (v_ArrVal_2085 (Array Int Int)) (v_ArrVal_2084 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2088))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2083)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2084)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2085)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-13 15:01:44,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733172294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:44,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:01:44,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 25 [2024-11-13 15:01:44,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087088906] [2024-11-13 15:01:44,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:44,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:01:44,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:44,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:01:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=702, Unknown=52, NotChecked=174, Total=1056 [2024-11-13 15:01:44,068 INFO L87 Difference]: Start difference. First operand 921 states and 1067 transitions. Second operand has 26 states, 23 states have (on average 7.217391304347826) internal successors, (166), 25 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:47,027 INFO L93 Difference]: Finished difference Result 923 states and 1071 transitions. [2024-11-13 15:01:47,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 15:01:47,027 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 7.217391304347826) internal successors, (166), 25 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2024-11-13 15:01:47,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:47,030 INFO L225 Difference]: With dead ends: 923 [2024-11-13 15:01:47,030 INFO L226 Difference]: Without dead ends: 923 [2024-11-13 15:01:47,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=922, Unknown=55, NotChecked=198, Total=1332 [2024-11-13 15:01:47,031 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 679 mSDsluCounter, 5242 mSDsCounter, 0 mSdLazyCounter, 3719 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 5728 SdHoareTripleChecker+Invalid, 3734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:47,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 5728 Invalid, 3734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3719 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 15:01:47,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2024-11-13 15:01:47,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 920. [2024-11-13 15:01:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 693 states have (on average 1.5281385281385282) internal successors, (1059), 913 states have internal predecessors, (1059), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:01:47,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1066 transitions. [2024-11-13 15:01:47,044 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1066 transitions. Word has length 103 [2024-11-13 15:01:47,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:47,044 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1066 transitions. [2024-11-13 15:01:47,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 7.217391304347826) internal successors, (166), 25 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1066 transitions. [2024-11-13 15:01:47,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:01:47,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:47,045 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:47,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:01:47,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 15:01:47,246 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:47,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:47,246 INFO L85 PathProgramCache]: Analyzing trace with hash -696893436, now seen corresponding path program 1 times [2024-11-13 15:01:47,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:47,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902627556] [2024-11-13 15:01:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:47,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:48,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:48,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:48,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902627556] [2024-11-13 15:01:48,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902627556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:48,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378558545] [2024-11-13 15:01:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:48,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:48,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:48,452 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:48,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:01:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:48,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 15:01:48,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:48,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:01:48,910 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:01:48,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:01:48,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:01:48,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:01:48,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:01:49,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:01:49,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:01:49,143 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:49,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:01:49,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:01:49,243 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:49,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:01:49,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:01:49,328 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:49,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:01:49,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:01:49,414 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:01:49,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:01:49,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:01:49,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:01:49,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:01:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:49,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:49,595 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_2275 (Array Int Int)) (v_ArrVal_2274 (Array Int Int))) (<= (+ 24 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2274) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2275) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_2274 (Array Int Int))) (<= 0 (+ 20 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2274) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-13 15:01:49,622 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2275 (Array Int Int)) (v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2272))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2273) .cse0 v_ArrVal_2274) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_2275) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2273) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2274) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))))) is different from false [2024-11-13 15:01:49,643 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2273) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2274) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))) (forall ((v_ArrVal_2275 (Array Int Int)) (v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2272))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2273) .cse2 v_ArrVal_2274) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_2275) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))) is different from false [2024-11-13 15:01:49,688 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2270 (Array Int Int)) (v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int)) (v_ArrVal_2271 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2271))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2270) .cse0 v_ArrVal_2273) (select (select (store .cse1 .cse0 v_ArrVal_2272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2274))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 20))) (forall ((v_ArrVal_2270 (Array Int Int)) (v_ArrVal_2275 (Array Int Int)) (v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int)) (v_ArrVal_2271 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2271))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_2272))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2270) .cse3 v_ArrVal_2273) .cse4 v_ArrVal_2274) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_2275) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2024-11-13 15:01:49,758 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_2270 (Array Int Int)) (v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int)) (v_ArrVal_2271 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2271))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2270) .cse1 v_ArrVal_2273) (select (select (store .cse2 .cse1 v_ArrVal_2272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2274))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (forall ((v_ArrVal_2270 (Array Int Int)) (v_ArrVal_2275 (Array Int Int)) (v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int)) (v_ArrVal_2271 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2271))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_2272))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2270) .cse4 v_ArrVal_2273) .cse5 v_ArrVal_2274) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_2275) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))))))) is different from false [2024-11-13 15:01:49,862 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2281 (Array Int Int)) (v_ArrVal_2270 (Array Int Int)) (v_ArrVal_2280 (Array Int Int)) (v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int)) (v_ArrVal_2271 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2280))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_2271))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2281) .cse0 v_ArrVal_2270) .cse1 v_ArrVal_2273) (select (select (store .cse2 .cse1 v_ArrVal_2272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2274))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20))) (forall ((v_ArrVal_2281 (Array Int Int)) (v_ArrVal_2270 (Array Int Int)) (v_ArrVal_2280 (Array Int Int)) (v_ArrVal_2275 (Array Int Int)) (v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int)) (v_ArrVal_2271 (Array Int Int))) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2280))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_2271))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_2272))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2281) .cse5 v_ArrVal_2270) .cse6 v_ArrVal_2273) .cse7 v_ArrVal_2274) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse8 .cse7 v_ArrVal_2275) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))))) is different from false [2024-11-13 15:01:49,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378558545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:49,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:01:49,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 21 [2024-11-13 15:01:49,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730843507] [2024-11-13 15:01:49,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:49,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 15:01:49,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:49,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 15:01:49,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=507, Unknown=16, NotChecked=306, Total=930 [2024-11-13 15:01:49,868 INFO L87 Difference]: Start difference. First operand 920 states and 1066 transitions. Second operand has 22 states, 19 states have (on average 8.263157894736842) internal successors, (157), 21 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:52,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:52,967 INFO L93 Difference]: Finished difference Result 922 states and 1070 transitions. [2024-11-13 15:01:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:01:52,967 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 8.263157894736842) internal successors, (157), 21 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2024-11-13 15:01:52,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:52,970 INFO L225 Difference]: With dead ends: 922 [2024-11-13 15:01:52,970 INFO L226 Difference]: Without dead ends: 922 [2024-11-13 15:01:52,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=899, Unknown=17, NotChecked=402, Total=1482 [2024-11-13 15:01:52,971 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 688 mSDsluCounter, 4039 mSDsCounter, 0 mSdLazyCounter, 4058 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 4528 SdHoareTripleChecker+Invalid, 4076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:52,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 4528 Invalid, 4076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 4058 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 15:01:52,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-13 15:01:52,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 904. [2024-11-13 15:01:52,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 679 states have (on average 1.5360824742268042) internal successors, (1043), 898 states have internal predecessors, (1043), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:01:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1049 transitions. [2024-11-13 15:01:52,983 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1049 transitions. Word has length 103 [2024-11-13 15:01:52,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:52,983 INFO L471 AbstractCegarLoop]: Abstraction has 904 states and 1049 transitions. [2024-11-13 15:01:52,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 8.263157894736842) internal successors, (157), 21 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:01:52,984 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1049 transitions. [2024-11-13 15:01:52,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-13 15:01:52,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:52,985 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:53,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:01:53,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 15:01:53,186 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:53,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:53,186 INFO L85 PathProgramCache]: Analyzing trace with hash 37819212, now seen corresponding path program 1 times [2024-11-13 15:01:53,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:53,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960781036] [2024-11-13 15:01:53,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:53,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:53,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:53,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:53,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960781036] [2024-11-13 15:01:53,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960781036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:53,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:53,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-13 15:01:53,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538857022] [2024-11-13 15:01:53,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:53,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:01:53,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:53,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:01:53,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:01:53,927 INFO L87 Difference]: Start difference. First operand 904 states and 1049 transitions. Second operand has 17 states, 15 states have (on average 6.933333333333334) internal successors, (104), 16 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:55,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:55,911 INFO L93 Difference]: Finished difference Result 927 states and 1075 transitions. [2024-11-13 15:01:55,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 15:01:55,912 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.933333333333334) internal successors, (104), 16 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2024-11-13 15:01:55,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:55,914 INFO L225 Difference]: With dead ends: 927 [2024-11-13 15:01:55,914 INFO L226 Difference]: Without dead ends: 927 [2024-11-13 15:01:55,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:01:55,915 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 729 mSDsluCounter, 4286 mSDsCounter, 0 mSdLazyCounter, 3098 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 4772 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:55,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 4772 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3098 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 15:01:55,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2024-11-13 15:01:55,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 923. [2024-11-13 15:01:55,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 697 states have (on average 1.5251076040172167) internal successors, (1063), 916 states have internal predecessors, (1063), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:01:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1070 transitions. [2024-11-13 15:01:55,928 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1070 transitions. Word has length 106 [2024-11-13 15:01:55,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:55,928 INFO L471 AbstractCegarLoop]: Abstraction has 923 states and 1070 transitions. [2024-11-13 15:01:55,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.933333333333334) internal successors, (104), 16 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:01:55,929 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1070 transitions. [2024-11-13 15:01:55,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-13 15:01:55,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:55,930 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:55,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-13 15:01:55,930 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr97REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:01:55,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:55,933 INFO L85 PathProgramCache]: Analyzing trace with hash 37819213, now seen corresponding path program 1 times [2024-11-13 15:01:55,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:55,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801536155] [2024-11-13 15:01:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:55,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:57,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:01:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:57,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:57,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801536155] [2024-11-13 15:01:57,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801536155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:57,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:57,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-13 15:01:57,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383995419] [2024-11-13 15:01:57,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:57,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:01:57,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:57,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:01:57,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:01:57,259 INFO L87 Difference]: Start difference. First operand 923 states and 1070 transitions. Second operand has 18 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:02:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:00,296 INFO L93 Difference]: Finished difference Result 926 states and 1074 transitions. [2024-11-13 15:02:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 15:02:00,296 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2024-11-13 15:02:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:00,298 INFO L225 Difference]: With dead ends: 926 [2024-11-13 15:02:00,298 INFO L226 Difference]: Without dead ends: 926 [2024-11-13 15:02:00,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:02:00,299 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 727 mSDsluCounter, 4055 mSDsCounter, 0 mSdLazyCounter, 4105 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 4120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:00,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 4542 Invalid, 4120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4105 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 15:02:00,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2024-11-13 15:02:00,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 923. [2024-11-13 15:02:00,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 697 states have (on average 1.5236728837876614) internal successors, (1062), 916 states have internal predecessors, (1062), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:02:00,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1069 transitions. [2024-11-13 15:02:00,307 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1069 transitions. Word has length 106 [2024-11-13 15:02:00,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:00,307 INFO L471 AbstractCegarLoop]: Abstraction has 923 states and 1069 transitions. [2024-11-13 15:02:00,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:02:00,308 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1069 transitions. [2024-11-13 15:02:00,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-13 15:02:00,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:00,308 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:00,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-13 15:02:00,308 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:02:00,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:00,309 INFO L85 PathProgramCache]: Analyzing trace with hash 850732805, now seen corresponding path program 1 times [2024-11-13 15:02:00,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:00,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877485442] [2024-11-13 15:02:00,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:00,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:00,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:02:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:01,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:01,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877485442] [2024-11-13 15:02:01,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877485442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:01,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803339049] [2024-11-13 15:02:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:01,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:01,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:01,093 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:01,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:02:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:01,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 15:02:01,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:01,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:02:01,589 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 15:02:01,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 15:02:01,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:02:01,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:02:01,893 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:02:01,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:02:02,008 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:02:02,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:02:02,070 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:02:02,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:02:02,135 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:02:02,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:02:02,203 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:02:02,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:02:02,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:02:02,297 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2024-11-13 15:02:02,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2024-11-13 15:02:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:02,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:03,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803339049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:03,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:02:03,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 26 [2024-11-13 15:02:03,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42023029] [2024-11-13 15:02:03,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:03,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 15:02:03,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 15:02:03,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1162, Unknown=56, NotChecked=0, Total=1406 [2024-11-13 15:02:03,320 INFO L87 Difference]: Start difference. First operand 923 states and 1069 transitions. Second operand has 27 states, 24 states have (on average 7.25) internal successors, (174), 26 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:02:06,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:06,752 INFO L93 Difference]: Finished difference Result 925 states and 1073 transitions. [2024-11-13 15:02:06,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:02:06,753 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 7.25) internal successors, (174), 26 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 107 [2024-11-13 15:02:06,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:06,754 INFO L225 Difference]: With dead ends: 925 [2024-11-13 15:02:06,754 INFO L226 Difference]: Without dead ends: 925 [2024-11-13 15:02:06,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=220, Invalid=1446, Unknown=56, NotChecked=0, Total=1722 [2024-11-13 15:02:06,755 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 678 mSDsluCounter, 6613 mSDsCounter, 0 mSdLazyCounter, 4609 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 7098 SdHoareTripleChecker+Invalid, 4626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 4609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:06,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 7098 Invalid, 4626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 4609 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-13 15:02:06,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-11-13 15:02:06,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 922. [2024-11-13 15:02:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 697 states have (on average 1.5222381635581061) internal successors, (1061), 915 states have internal predecessors, (1061), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:02:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1068 transitions. [2024-11-13 15:02:06,766 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1068 transitions. Word has length 107 [2024-11-13 15:02:06,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:06,766 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1068 transitions. [2024-11-13 15:02:06,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 7.25) internal successors, (174), 26 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:02:06,767 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1068 transitions. [2024-11-13 15:02:06,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-13 15:02:06,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:06,768 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:06,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:02:06,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 15:02:06,968 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr97REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:02:06,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:06,969 INFO L85 PathProgramCache]: Analyzing trace with hash 850732806, now seen corresponding path program 1 times [2024-11-13 15:02:06,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:06,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50042849] [2024-11-13 15:02:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:06,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:08,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:02:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:08,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50042849] [2024-11-13 15:02:08,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50042849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:08,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106773484] [2024-11-13 15:02:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:08,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:08,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:08,218 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:08,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:02:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:08,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 15:02:08,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:08,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:02:08,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:02:08,716 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 15:02:08,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 15:02:08,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:02:08,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:02:08,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-13 15:02:09,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:02:09,279 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:02:09,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 15:02:09,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:02:09,459 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:02:09,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 15:02:09,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:02:09,564 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:02:09,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 15:02:09,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:02:09,667 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:02:09,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 15:02:09,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:02:09,783 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:02:09,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 15:02:09,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:02:09,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 18 [2024-11-13 15:02:09,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:02:09,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:02:09,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:02:09,932 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-13 15:02:09,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-13 15:02:09,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:09,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:10,559 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (or (forall ((v_ArrVal_2858 (Array Int Int)) (v_ArrVal_2861 (Array Int Int)) (v_ArrVal_2859 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2859) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2858) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2861) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)))) (forall ((v_ArrVal_2858 (Array Int Int)) (v_ArrVal_2861 (Array Int Int)) (v_ArrVal_2860 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int) (v_ArrVal_2859 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)) (forall ((v_ArrVal_2862 Int)) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2858))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2859) .cse2 v_ArrVal_2861) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc61#1.base_7| v_ArrVal_2862) (select (select (store .cse3 .cse2 v_ArrVal_2860) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))))) is different from false [2024-11-13 15:02:41,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106773484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:41,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:02:41,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 29 [2024-11-13 15:02:41,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146172600] [2024-11-13 15:02:41,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:41,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 15:02:41,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:41,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 15:02:41,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1412, Unknown=61, NotChecked=78, Total=1722 [2024-11-13 15:02:41,749 INFO L87 Difference]: Start difference. First operand 922 states and 1068 transitions. Second operand has 30 states, 27 states have (on average 6.444444444444445) internal successors, (174), 29 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:03:26,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:26,329 INFO L93 Difference]: Finished difference Result 924 states and 1072 transitions. [2024-11-13 15:03:26,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:03:26,330 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 6.444444444444445) internal successors, (174), 29 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 107 [2024-11-13 15:03:26,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:26,332 INFO L225 Difference]: With dead ends: 924 [2024-11-13 15:03:26,332 INFO L226 Difference]: Without dead ends: 924 [2024-11-13 15:03:26,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=298, Invalid=2295, Unknown=63, NotChecked=100, Total=2756 [2024-11-13 15:03:26,333 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 679 mSDsluCounter, 7492 mSDsCounter, 0 mSdLazyCounter, 7482 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 7977 SdHoareTripleChecker+Invalid, 7502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 7482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:26,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 7977 Invalid, 7502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 7482 Invalid, 0 Unknown, 0 Unchecked, 41.6s Time] [2024-11-13 15:03:26,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2024-11-13 15:03:26,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 902. [2024-11-13 15:03:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 679 states have (on average 1.533136966126657) internal successors, (1041), 896 states have internal predecessors, (1041), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:03:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1047 transitions. [2024-11-13 15:03:26,345 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1047 transitions. Word has length 107 [2024-11-13 15:03:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:26,345 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1047 transitions. [2024-11-13 15:03:26,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 6.444444444444445) internal successors, (174), 29 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:03:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1047 transitions. [2024-11-13 15:03:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-13 15:03:26,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:26,346 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:03:26,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:03:26,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 15:03:26,547 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr100REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:03:26,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:26,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1391373520, now seen corresponding path program 1 times [2024-11-13 15:03:26,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:26,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987332089] [2024-11-13 15:03:26,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:26,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:27,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:03:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:27,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:27,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987332089] [2024-11-13 15:03:27,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987332089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:03:27,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:03:27,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:03:27,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354957003] [2024-11-13 15:03:27,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:03:27,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:03:27,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:03:27,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:03:27,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:03:27,334 INFO L87 Difference]: Start difference. First operand 902 states and 1047 transitions. Second operand has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:03:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:33,014 INFO L93 Difference]: Finished difference Result 907 states and 1055 transitions. [2024-11-13 15:03:33,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:03:33,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2024-11-13 15:03:33,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:33,016 INFO L225 Difference]: With dead ends: 907 [2024-11-13 15:03:33,017 INFO L226 Difference]: Without dead ends: 907 [2024-11-13 15:03:33,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:03:33,017 INFO L432 NwaCegarLoop]: 770 mSDtfsCounter, 6 mSDsluCounter, 2861 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3631 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:33,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3631 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-13 15:03:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2024-11-13 15:03:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 901. [2024-11-13 15:03:33,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 679 states have (on average 1.5316642120765833) internal successors, (1040), 895 states have internal predecessors, (1040), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:03:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1046 transitions. [2024-11-13 15:03:33,029 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1046 transitions. Word has length 109 [2024-11-13 15:03:33,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:33,029 INFO L471 AbstractCegarLoop]: Abstraction has 901 states and 1046 transitions. [2024-11-13 15:03:33,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:03:33,030 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1046 transitions. [2024-11-13 15:03:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-13 15:03:33,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:33,030 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:03:33,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-13 15:03:33,031 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr101REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:03:33,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:33,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1391373521, now seen corresponding path program 1 times [2024-11-13 15:03:33,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:33,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291730296] [2024-11-13 15:03:33,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:33,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:36,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:03:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:36,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:36,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291730296] [2024-11-13 15:03:36,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291730296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:03:36,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:03:36,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:03:36,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854703223] [2024-11-13 15:03:36,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:03:36,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:03:36,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:03:36,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:03:36,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:03:36,696 INFO L87 Difference]: Start difference. First operand 901 states and 1046 transitions. Second operand has 19 states, 17 states have (on average 6.294117647058823) internal successors, (107), 18 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:03:54,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:54,334 INFO L93 Difference]: Finished difference Result 926 states and 1074 transitions. [2024-11-13 15:03:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:03:54,335 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.294117647058823) internal successors, (107), 18 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2024-11-13 15:03:54,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:54,338 INFO L225 Difference]: With dead ends: 926 [2024-11-13 15:03:54,338 INFO L226 Difference]: Without dead ends: 926 [2024-11-13 15:03:54,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2024-11-13 15:03:54,339 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 709 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 2911 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:54,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 3436 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2911 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2024-11-13 15:03:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2024-11-13 15:03:54,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 923. [2024-11-13 15:03:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 700 states have (on average 1.5171428571428571) internal successors, (1062), 916 states have internal predecessors, (1062), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:03:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1069 transitions. [2024-11-13 15:03:54,351 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1069 transitions. Word has length 109 [2024-11-13 15:03:54,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:54,352 INFO L471 AbstractCegarLoop]: Abstraction has 923 states and 1069 transitions. [2024-11-13 15:03:54,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.294117647058823) internal successors, (107), 18 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:03:54,352 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1069 transitions. [2024-11-13 15:03:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-13 15:03:54,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:54,353 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:03:54,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-13 15:03:54,353 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr101REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:03:54,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:54,354 INFO L85 PathProgramCache]: Analyzing trace with hash -420359560, now seen corresponding path program 1 times [2024-11-13 15:03:54,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:54,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145644467] [2024-11-13 15:03:54,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:54,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:57,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:03:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:58,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:58,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145644467] [2024-11-13 15:03:58,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145644467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:03:58,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001329049] [2024-11-13 15:03:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:58,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:58,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:58,080 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:58,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:03:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:58,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-13 15:03:58,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:58,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:03:59,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:03:59,406 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 15:03:59,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 15:03:59,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:03:59,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:04:00,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-13 15:04:00,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:04:01,556 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:04:01,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 15:04:01,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:04:02,339 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:04:02,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 15:04:02,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:04:02,868 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:04:02,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 15:04:02,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:04:03,412 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:04:03,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 15:04:03,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:04:03,955 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:04:03,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 15:04:03,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:04:04,568 INFO L349 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2024-11-13 15:04:04,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2024-11-13 15:04:04,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 15:04:04,941 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:04:04,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:04:04,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:04:05,198 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 31 treesize of output 13 [2024-11-13 15:04:05,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:04:05,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:05,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:04:05,905 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3272 (Array Int Int)) (v_ArrVal_3273 (Array Int Int))) (<= (+ 44 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem60#1.base| v_ArrVal_3273) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem60#1.base| v_ArrVal_3272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3273 (Array Int Int))) (<= 0 (+ 40 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem60#1.base| v_ArrVal_3273) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 15:04:09,986 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (or (forall ((v_ArrVal_3273 (Array Int Int)) (v_ArrVal_3265 (Array Int Int)) (v_ArrVal_3266 (Array Int Int)) (v_ArrVal_3267 (Array Int Int)) (v_ArrVal_3268 (Array Int Int)) (v_ArrVal_3269 (Array Int Int)) (v_ArrVal_3270 (Array Int Int))) (<= 0 (+ 40 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3266))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_3268))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3265) .cse1 v_ArrVal_3267) .cse2 v_ArrVal_3269) (select (select (store .cse3 .cse2 v_ArrVal_3270) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3273))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))) (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_9| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_9|) 0)))) (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_9| Int) (v_ArrVal_3265 (Array Int Int)) (v_ArrVal_3266 (Array Int Int)) (v_ArrVal_3267 (Array Int Int)) (v_ArrVal_3268 (Array Int Int)) (v_ArrVal_3269 (Array Int Int)) (v_ArrVal_3270 (Array Int Int))) (or (forall ((v_ArrVal_3272 (Array Int Int)) (v_ArrVal_3271 Int) (v_ArrVal_3273 (Array Int Int))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3266))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_3268))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_3270))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (<= (+ 44 (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3265) .cse6 v_ArrVal_3267) .cse7 v_ArrVal_3269) .cse8 v_ArrVal_3273) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc61#1.base_9| v_ArrVal_3271) (select (select (store .cse9 .cse8 v_ArrVal_3272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_9|) 0))))))) is different from false [2024-11-13 15:04:19,240 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (and (forall ((v_ArrVal_3263 (Array Int Int)) (v_ArrVal_3264 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc61#1.base_9| Int) (v_ArrVal_3265 (Array Int Int)) (v_ArrVal_3266 (Array Int Int)) (v_ArrVal_3267 (Array Int Int)) (v_ArrVal_3268 (Array Int Int)) (v_ArrVal_3269 (Array Int Int)) (v_ArrVal_3270 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_9|) 0)) (forall ((v_ArrVal_3272 (Array Int Int)) (v_ArrVal_3271 Int) (v_ArrVal_3273 (Array Int Int))) (let ((.cse9 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3263))) (let ((.cse1 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse8 (store .cse9 .cse1 v_ArrVal_3266))) (let ((.cse2 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse7 (store .cse8 .cse2 v_ArrVal_3268))) (let ((.cse3 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse6 (store .cse7 .cse3 v_ArrVal_3270))) (let ((.cse4 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (<= (+ 44 (select (select (store (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3264) .cse1 v_ArrVal_3265) .cse2 v_ArrVal_3267) .cse3 v_ArrVal_3269) .cse4 v_ArrVal_3273) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc61#1.base_9| v_ArrVal_3271) (select (select (store .cse6 .cse4 v_ArrVal_3272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5)))))))))))))) (or (forall ((v_ArrVal_3273 (Array Int Int)) (v_ArrVal_3263 (Array Int Int)) (v_ArrVal_3264 (Array Int Int)) (v_ArrVal_3265 (Array Int Int)) (v_ArrVal_3266 (Array Int Int)) (v_ArrVal_3267 (Array Int Int)) (v_ArrVal_3268 (Array Int Int)) (v_ArrVal_3269 (Array Int Int)) (v_ArrVal_3270 (Array Int Int))) (<= 0 (+ 40 (select (select (let ((.cse15 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3263))) (let ((.cse10 (select (select .cse15 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse14 (store .cse15 .cse10 v_ArrVal_3266))) (let ((.cse11 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse13 (store .cse14 .cse11 v_ArrVal_3268))) (let ((.cse12 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3264) .cse10 v_ArrVal_3265) .cse11 v_ArrVal_3267) .cse12 v_ArrVal_3269) (select (select (store .cse13 .cse12 v_ArrVal_3270) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3273))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5)))) (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_9| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_9|) 0))))))) is different from false [2024-11-13 15:04:35,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001329049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:04:35,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:04:35,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2024-11-13 15:04:35,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626427900] [2024-11-13 15:04:35,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:04:35,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 15:04:35,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:35,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 15:04:35,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1618, Unknown=61, NotChecked=258, Total=2162 [2024-11-13 15:04:35,260 INFO L87 Difference]: Start difference. First operand 923 states and 1069 transitions. Second operand has 33 states, 30 states have (on average 6.0) internal successors, (180), 32 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:05:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:05:17,596 INFO L93 Difference]: Finished difference Result 925 states and 1073 transitions. [2024-11-13 15:05:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 15:05:17,597 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 6.0) internal successors, (180), 32 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2024-11-13 15:05:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:05:17,598 INFO L225 Difference]: With dead ends: 925 [2024-11-13 15:05:17,599 INFO L226 Difference]: Without dead ends: 925 [2024-11-13 15:05:17,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=374, Invalid=2656, Unknown=62, NotChecked=330, Total=3422 [2024-11-13 15:05:17,603 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 673 mSDsluCounter, 6407 mSDsCounter, 0 mSdLazyCounter, 6415 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 6891 SdHoareTripleChecker+Invalid, 6435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 6415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:05:17,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 6891 Invalid, 6435 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 6415 Invalid, 0 Unknown, 0 Unchecked, 38.7s Time] [2024-11-13 15:05:17,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-11-13 15:05:17,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 900. [2024-11-13 15:05:17,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 679 states have (on average 1.5301914580265095) internal successors, (1039), 894 states have internal predecessors, (1039), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:05:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1045 transitions. [2024-11-13 15:05:17,617 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1045 transitions. Word has length 110 [2024-11-13 15:05:17,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:05:17,619 INFO L471 AbstractCegarLoop]: Abstraction has 900 states and 1045 transitions. [2024-11-13 15:05:17,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 6.0) internal successors, (180), 32 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:05:17,620 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1045 transitions. [2024-11-13 15:05:17,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 15:05:17,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:05:17,621 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:05:17,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:05:17,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:17,822 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:05:17,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash -320172045, now seen corresponding path program 1 times [2024-11-13 15:05:17,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:17,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685069905] [2024-11-13 15:05:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:17,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:20,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:05:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:20,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:05:20,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685069905] [2024-11-13 15:05:20,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685069905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:05:20,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:05:20,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-13 15:05:20,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957980495] [2024-11-13 15:05:20,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:05:20,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:05:20,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:05:20,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:05:20,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:05:20,399 INFO L87 Difference]: Start difference. First operand 900 states and 1045 transitions. Second operand has 18 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:05:38,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:05:38,051 INFO L93 Difference]: Finished difference Result 951 states and 1101 transitions. [2024-11-13 15:05:38,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:05:38,052 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2024-11-13 15:05:38,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:05:38,054 INFO L225 Difference]: With dead ends: 951 [2024-11-13 15:05:38,054 INFO L226 Difference]: Without dead ends: 951 [2024-11-13 15:05:38,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:05:38,054 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 819 mSDsluCounter, 3880 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:05:38,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 4366 Invalid, 2888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 16.4s Time] [2024-11-13 15:05:38,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2024-11-13 15:05:38,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 925. [2024-11-13 15:05:38,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 703 states have (on average 1.5149359886201992) internal successors, (1065), 918 states have internal predecessors, (1065), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:05:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1072 transitions. [2024-11-13 15:05:38,067 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1072 transitions. Word has length 112 [2024-11-13 15:05:38,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:05:38,067 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1072 transitions. [2024-11-13 15:05:38,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:05:38,068 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1072 transitions. [2024-11-13 15:05:38,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 15:05:38,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:05:38,069 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:05:38,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-13 15:05:38,069 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr105REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:05:38,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:38,069 INFO L85 PathProgramCache]: Analyzing trace with hash -320172044, now seen corresponding path program 1 times [2024-11-13 15:05:38,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:38,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263199996] [2024-11-13 15:05:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:38,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:41,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:05:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:41,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:05:41,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263199996] [2024-11-13 15:05:41,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263199996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:05:41,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:05:41,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-13 15:05:41,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243259449] [2024-11-13 15:05:41,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:05:41,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:05:41,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:05:41,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:05:41,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:05:41,447 INFO L87 Difference]: Start difference. First operand 925 states and 1072 transitions. Second operand has 17 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:06:08,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:06:08,113 INFO L93 Difference]: Finished difference Result 950 states and 1100 transitions. [2024-11-13 15:06:08,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:06:08,114 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2024-11-13 15:06:08,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:06:08,116 INFO L225 Difference]: With dead ends: 950 [2024-11-13 15:06:08,116 INFO L226 Difference]: Without dead ends: 950 [2024-11-13 15:06:08,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2024-11-13 15:06:08,117 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 760 mSDsluCounter, 5557 mSDsCounter, 0 mSdLazyCounter, 4265 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 6047 SdHoareTripleChecker+Invalid, 4280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:06:08,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 6047 Invalid, 4280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4265 Invalid, 0 Unknown, 0 Unchecked, 25.3s Time] [2024-11-13 15:06:08,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2024-11-13 15:06:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 925. [2024-11-13 15:06:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 703 states have (on average 1.5135135135135136) internal successors, (1064), 918 states have internal predecessors, (1064), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:06:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1071 transitions. [2024-11-13 15:06:08,130 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1071 transitions. Word has length 112 [2024-11-13 15:06:08,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:06:08,131 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1071 transitions. [2024-11-13 15:06:08,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:06:08,131 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1071 transitions. [2024-11-13 15:06:08,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-13 15:06:08,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:06:08,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:06:08,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-13 15:06:08,132 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:06:08,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:08,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1193620716, now seen corresponding path program 1 times [2024-11-13 15:06:08,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:08,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893547004] [2024-11-13 15:06:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:08,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:10,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:06:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:11,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:11,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893547004] [2024-11-13 15:06:11,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893547004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:06:11,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716570039] [2024-11-13 15:06:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:11,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:11,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:11,077 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:11,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:06:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:11,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 15:06:11,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:11,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:06:12,344 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:06:12,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:06:12,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:06:12,629 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:12,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 15:06:12,962 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:12,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 15:06:13,292 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:13,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 15:06:13,624 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:13,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 15:06:13,958 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:13,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 15:06:14,102 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:14,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:06:14,484 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:14,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 15:06:14,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:06:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:14,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:06:14,615 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3698 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem62#1.base| v_ArrVal_3698) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-13 15:06:14,948 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2024-11-13 15:06:14,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2024-11-13 15:06:14,971 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem60#1.base| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem60#1.base| v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-13 15:06:15,013 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| .cse2 v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse2)))) is different from false [2024-11-13 15:06:15,071 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3696)) (.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_3697))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-13 15:06:15,396 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_3695))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3696)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-13 15:06:15,430 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3695))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3696)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-13 15:06:15,483 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3694 (Array Int Int)) (v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_3694))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3695)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3696)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-13 15:06:15,519 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3694 (Array Int Int)) (v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3694))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3695)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3696)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-13 15:06:15,591 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3693 (Array Int Int)) (v_ArrVal_3694 (Array Int Int)) (v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3693))) (store .cse6 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3694)))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3695)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3696)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-13 15:06:15,648 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3693 (Array Int Int)) (v_ArrVal_3694 (Array Int Int)) (v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse3 (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3693))) (store .cse6 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3694)))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3695)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3696)))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_3697))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 15:06:15,902 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3693 (Array Int Int)) (v_ArrVal_3694 (Array Int Int)) (v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int)) (v_ArrVal_3701 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (let ((.cse4 (let ((.cse5 (let ((.cse6 (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_3701))) (store .cse7 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3693)))) (store .cse6 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3694)))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3695)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3696)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-13 15:06:15,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716570039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:06:15,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:06:15,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 24 [2024-11-13 15:06:15,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268371779] [2024-11-13 15:06:15,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:06:15,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 15:06:15,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:15,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 15:06:15,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=611, Unknown=21, NotChecked=660, Total=1406 [2024-11-13 15:06:15,910 INFO L87 Difference]: Start difference. First operand 925 states and 1071 transitions. Second operand has 25 states, 23 states have (on average 7.217391304347826) internal successors, (166), 24 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:06:35,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:06:35,886 INFO L93 Difference]: Finished difference Result 941 states and 1089 transitions. [2024-11-13 15:06:35,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:06:35,887 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 7.217391304347826) internal successors, (166), 24 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2024-11-13 15:06:35,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:06:35,889 INFO L225 Difference]: With dead ends: 941 [2024-11-13 15:06:35,889 INFO L226 Difference]: Without dead ends: 941 [2024-11-13 15:06:35,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=217, Invalid=1212, Unknown=21, NotChecked=902, Total=2352 [2024-11-13 15:06:35,890 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 775 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 3140 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 4835 SdHoareTripleChecker+Invalid, 3169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:06:35,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 4835 Invalid, 3169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3140 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2024-11-13 15:06:35,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-11-13 15:06:35,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 924. [2024-11-13 15:06:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 703 states have (on average 1.5120910384068278) internal successors, (1063), 917 states have internal predecessors, (1063), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:06:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1070 transitions. [2024-11-13 15:06:35,902 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1070 transitions. Word has length 113 [2024-11-13 15:06:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:06:35,903 INFO L471 AbstractCegarLoop]: Abstraction has 924 states and 1070 transitions. [2024-11-13 15:06:35,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 7.217391304347826) internal successors, (166), 24 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:06:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1070 transitions. [2024-11-13 15:06:35,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-13 15:06:35,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:06:35,904 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:06:35,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:06:36,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:36,104 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr105REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:06:36,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:36,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1193620717, now seen corresponding path program 1 times [2024-11-13 15:06:36,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:06:36,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51816668] [2024-11-13 15:06:36,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:36,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:06:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:39,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:06:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:39,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:39,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51816668] [2024-11-13 15:06:39,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51816668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:06:39,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596182144] [2024-11-13 15:06:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:06:39,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:39,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:39,671 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:39,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:06:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:40,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 15:06:40,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:40,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:06:41,055 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:06:41,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:06:41,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:06:41,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:06:41,698 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:41,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 48 [2024-11-13 15:06:41,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:06:42,097 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:42,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 48 [2024-11-13 15:06:42,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:06:42,493 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:42,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 48 [2024-11-13 15:06:42,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:06:42,897 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:42,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 48 [2024-11-13 15:06:42,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:06:43,305 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:43,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 48 [2024-11-13 15:06:43,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:06:43,761 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:43,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:06:43,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:06:44,534 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:06:44,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:06:44,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:06:44,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:06:44,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:06:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:44,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:06:45,457 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3932 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem62#1.base| v_ArrVal_3933) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem62#1.base| v_ArrVal_3932) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3933 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem62#1.base| v_ArrVal_3933) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))))) is different from false [2024-11-13 15:06:45,503 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_3933 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3933) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (forall ((v_ArrVal_3932 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3933) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3932) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-13 15:06:45,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:06:45,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 84 [2024-11-13 15:06:45,789 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem60#1.base| v_ArrVal_3931) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem60#1.base| v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3933) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 1)) (forall ((v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem60#1.base| (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem60#1.base| v_ArrVal_3930))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (forall ((v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem60#1.base| v_prenex_44) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem60#1.base| v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_prenex_45) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))))) is different from false [2024-11-13 15:06:45,920 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_prenex_44) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_prenex_45) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (forall ((v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3931) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3933) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 1)) (forall ((v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int))) (= .cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3930))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:06:46,034 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int))) (<= 0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3929))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3928) .cse0 v_prenex_44) (select (select (store .cse1 .cse0 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_prenex_45))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (forall ((v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (< (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3929))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3928) .cse3 v_ArrVal_3931) (select (select (store .cse4 .cse3 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3933))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 1)) (forall ((v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3929))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (let ((.cse5 (store .cse6 .cse7 v_ArrVal_3930))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse7)))))) is different from false [2024-11-13 15:06:46,116 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse4 v_ArrVal_3929))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_3930))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) (forall ((v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int))) (<= 0 (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| .cse4 v_ArrVal_3929))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse4 v_ArrVal_3928) .cse5 v_prenex_44) (select (select (store .cse6 .cse5 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_prenex_45))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (forall ((v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (< (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse4 v_ArrVal_3929))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse4 v_ArrVal_3928) .cse7 v_ArrVal_3931) (select (select (store .cse8 .cse7 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3933))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 1))))) is different from false [2024-11-13 15:06:46,262 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (< (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_3927))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_3929))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_3926) .cse0 v_ArrVal_3928) .cse1 v_ArrVal_3931) (select (select (store .cse2 .cse1 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3933))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1)) (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int))) (<= 0 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_3927))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_3929))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_3926) .cse5 v_ArrVal_3928) .cse6 v_prenex_44) (select (select (store .cse7 .cse6 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_prenex_45))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (forall ((v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int))) (let ((.cse11 (let ((.cse12 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_3927))) (store .cse12 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3929)))) (let ((.cse9 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (= .cse9 (select (select (let ((.cse10 (store .cse11 .cse9 v_ArrVal_3930))) (store .cse10 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))) is different from false [2024-11-13 15:06:46,348 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (< (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3927))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_3929))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3926) .cse1 v_ArrVal_3928) .cse2 v_ArrVal_3931) (select (select (store .cse3 .cse2 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3933))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1)) (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int))) (<= 0 (select (select (let ((.cse9 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3927))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_3929))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3926) .cse6 v_ArrVal_3928) .cse7 v_prenex_44) (select (select (store .cse8 .cse7 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_prenex_45))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (forall ((v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int))) (let ((.cse11 (let ((.cse13 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3927))) (store .cse13 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3929)))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (= (select (select (let ((.cse10 (store .cse11 .cse12 v_ArrVal_3930))) (store .cse10 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) .cse12))))))) is different from false [2024-11-13 15:06:46,568 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int)) (v_ArrVal_3924 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (< (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_3925))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_3927))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_3929))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_3924) .cse0 v_ArrVal_3926) .cse1 v_ArrVal_3928) .cse2 v_ArrVal_3931) (select (select (store .cse3 .cse2 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3933))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1)) (forall ((v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (let ((.cse8 (let ((.cse10 (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_3925))) (store .cse11 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3927)))) (store .cse10 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3929)))) (let ((.cse9 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (= (select (select (let ((.cse7 (store .cse8 .cse9 v_ArrVal_3930))) (store .cse7 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) .cse9)))) (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int)) (v_ArrVal_3924 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (<= 0 (select (select (let ((.cse17 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_3925))) (let ((.cse12 (select (select .cse17 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse16 (store .cse17 .cse12 v_ArrVal_3927))) (let ((.cse13 (select (select .cse16 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse15 (store .cse16 .cse13 v_ArrVal_3929))) (let ((.cse14 (select (select .cse15 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_3924) .cse12 v_ArrVal_3926) .cse13 v_ArrVal_3928) .cse14 v_prenex_44) (select (select (store .cse15 .cse14 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_prenex_45))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))) is different from false [2024-11-13 15:06:46,727 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (and (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int)) (v_ArrVal_3924 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (<= 0 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3925))) (let ((.cse1 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse6 (store .cse7 .cse1 v_ArrVal_3927))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse4 (store .cse6 .cse2 v_ArrVal_3929))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3924) .cse1 v_ArrVal_3926) .cse2 v_ArrVal_3928) .cse3 v_prenex_44) (select (select (store .cse4 .cse3 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_prenex_45))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int)) (v_ArrVal_3924 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (< (select (select (let ((.cse13 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3925))) (let ((.cse8 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse12 (store .cse13 .cse8 v_ArrVal_3927))) (let ((.cse9 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse11 (store .cse12 .cse9 v_ArrVal_3929))) (let ((.cse10 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3924) .cse8 v_ArrVal_3926) .cse9 v_ArrVal_3928) .cse10 v_ArrVal_3931) (select (select (store .cse11 .cse10 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3933))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) 1)) (forall ((v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (let ((.cse16 (let ((.cse17 (let ((.cse18 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3925))) (store .cse18 (select (select .cse18 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3927)))) (store .cse17 (select (select .cse17 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3929)))) (let ((.cse14 (select (select .cse16 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (= .cse14 (select (select (let ((.cse15 (store .cse16 .cse14 v_ArrVal_3930))) (store .cse15 (select (select .cse15 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5)))))))) is different from false [2024-11-13 15:06:51,177 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int)) (v_ArrVal_3922 (Array Int Int)) (v_ArrVal_3923 (Array Int Int)) (v_ArrVal_3924 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (<= 0 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3923))) (let ((.cse0 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse7 (store .cse8 .cse0 v_ArrVal_3925))) (let ((.cse1 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse6 (store .cse7 .cse1 v_ArrVal_3927))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse4 (store .cse6 .cse2 v_ArrVal_3929))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (store (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3922) .cse0 v_ArrVal_3924) .cse1 v_ArrVal_3926) .cse2 v_ArrVal_3928) .cse3 v_prenex_44) (select (select (store .cse4 .cse3 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_prenex_45))))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (forall ((v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int)) (v_ArrVal_3923 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (let ((.cse11 (let ((.cse12 (let ((.cse13 (let ((.cse14 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3923))) (store .cse14 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3925)))) (store .cse13 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3927)))) (store .cse12 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3929)))) (let ((.cse9 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (= .cse9 (select (select (let ((.cse10 (store .cse11 .cse9 v_ArrVal_3930))) (store .cse10 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))))) (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3922 (Array Int Int)) (v_ArrVal_3933 (Array Int Int)) (v_ArrVal_3923 (Array Int Int)) (v_ArrVal_3924 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (< (select (select (let ((.cse22 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3923))) (let ((.cse15 (select (select .cse22 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse21 (store .cse22 .cse15 v_ArrVal_3925))) (let ((.cse16 (select (select .cse21 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse20 (store .cse21 .cse16 v_ArrVal_3927))) (let ((.cse17 (select (select .cse20 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse19 (store .cse20 .cse17 v_ArrVal_3929))) (let ((.cse18 (select (select .cse19 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (store (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3922) .cse15 v_ArrVal_3924) .cse16 v_ArrVal_3926) .cse17 v_ArrVal_3928) .cse18 v_ArrVal_3931) (select (select (store .cse19 .cse18 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3933))))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) 1)))) is different from false [2024-11-13 15:06:56,441 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse7 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int)) (v_ArrVal_3923 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (let ((.cse3 (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$#1.base| .cse7 v_ArrVal_3923))) (store .cse6 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3925)))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3927)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3929)))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_3930))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int)) (v_ArrVal_3922 (Array Int Int)) (v_ArrVal_3923 (Array Int Int)) (v_ArrVal_3924 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (<= 0 (select (select (let ((.cse15 (store |c_#memory_$Pointer$#1.base| .cse7 v_ArrVal_3923))) (let ((.cse8 (select (select .cse15 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse14 (store .cse15 .cse8 v_ArrVal_3925))) (let ((.cse9 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse13 (store .cse14 .cse9 v_ArrVal_3927))) (let ((.cse10 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse12 (store .cse13 .cse10 v_ArrVal_3929))) (let ((.cse11 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse7 v_ArrVal_3922) .cse8 v_ArrVal_3924) .cse9 v_ArrVal_3926) .cse10 v_ArrVal_3928) .cse11 v_prenex_44) (select (select (store .cse12 .cse11 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_prenex_45))))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3922 (Array Int Int)) (v_ArrVal_3933 (Array Int Int)) (v_ArrVal_3923 (Array Int Int)) (v_ArrVal_3924 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (< (select (select (let ((.cse23 (store |c_#memory_$Pointer$#1.base| .cse7 v_ArrVal_3923))) (let ((.cse16 (select (select .cse23 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse22 (store .cse23 .cse16 v_ArrVal_3925))) (let ((.cse17 (select (select .cse22 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse21 (store .cse22 .cse17 v_ArrVal_3927))) (let ((.cse18 (select (select .cse21 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse20 (store .cse21 .cse18 v_ArrVal_3929))) (let ((.cse19 (select (select .cse20 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse7 v_ArrVal_3922) .cse16 v_ArrVal_3924) .cse17 v_ArrVal_3926) .cse18 v_ArrVal_3928) .cse19 v_ArrVal_3931) (select (select (store .cse20 .cse19 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3933))))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 1))))) is different from false [2024-11-13 15:07:01,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-13 15:07:01,593 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-13 15:07:01,594 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-13 15:07:01,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:07:01,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-13 15:07:01,796 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:842) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:553) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:360) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:324) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 47 more [2024-11-13 15:07:01,803 INFO L158 Benchmark]: Toolchain (without parser) took 395241.48ms. Allocated memory was 117.4MB in the beginning and 637.5MB in the end (delta: 520.1MB). Free memory was 89.9MB in the beginning and 374.6MB in the end (delta: -284.8MB). Peak memory consumption was 239.6MB. Max. memory is 16.1GB. [2024-11-13 15:07:01,804 INFO L158 Benchmark]: CDTParser took 1.07ms. Allocated memory is still 83.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:07:01,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1110.09ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 56.3MB in the end (delta: 33.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 15:07:01,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 181.07ms. Allocated memory is still 117.4MB. Free memory was 56.3MB in the beginning and 48.7MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:07:01,804 INFO L158 Benchmark]: Boogie Preprocessor took 235.13ms. Allocated memory is still 117.4MB. Free memory was 48.7MB in the beginning and 84.9MB in the end (delta: -36.2MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2024-11-13 15:07:01,804 INFO L158 Benchmark]: RCFGBuilder took 3488.26ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 84.9MB in the beginning and 82.9MB in the end (delta: 2.0MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. [2024-11-13 15:07:01,804 INFO L158 Benchmark]: TraceAbstraction took 390219.98ms. Allocated memory was 151.0MB in the beginning and 637.5MB in the end (delta: 486.5MB). Free memory was 82.2MB in the beginning and 374.6MB in the end (delta: -292.5MB). Peak memory consumption was 197.2MB. Max. memory is 16.1GB. [2024-11-13 15:07:01,809 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07ms. Allocated memory is still 83.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1110.09ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 56.3MB in the end (delta: 33.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 181.07ms. Allocated memory is still 117.4MB. Free memory was 56.3MB in the beginning and 48.7MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 235.13ms. Allocated memory is still 117.4MB. Free memory was 48.7MB in the beginning and 84.9MB in the end (delta: -36.2MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. * RCFGBuilder took 3488.26ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 84.9MB in the beginning and 82.9MB in the end (delta: 2.0MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. * TraceAbstraction took 390219.98ms. Allocated memory was 151.0MB in the beginning and 637.5MB in the end (delta: 486.5MB). Free memory was 82.2MB in the beginning and 374.6MB in the end (delta: -292.5MB). Peak memory consumption was 197.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:07:04,277 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:07:04,398 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 15:07:04,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:07:04,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:07:04,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:07:04,427 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:07:04,427 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:07:04,427 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:07:04,428 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:07:04,428 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:07:04,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:07:04,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:07:04,429 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:07:04,429 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:07:04,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:07:04,429 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:07:04,429 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:07:04,429 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:07:04,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:07:04,429 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:07:04,430 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:07:04,430 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:07:04,430 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:07:04,430 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:07:04,430 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 15:07:04,430 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:07:04,430 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 15:07:04,430 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:07:04,431 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:07:04,431 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:07:04,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:07:04,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:07:04,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:07:04,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:07:04,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:07:04,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:07:04,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:07:04,432 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 15:07:04,432 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 15:07:04,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:07:04,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:07:04,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:07:04,432 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:07:04,433 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2024-11-13 15:07:04,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:07:04,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:07:04,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:07:04,746 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:07:04,746 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:07:04,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i Unable to find full path for "g++" [2024-11-13 15:07:06,878 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:07:07,321 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:07:07,326 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i [2024-11-13 15:07:07,357 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/data/b5686aab2/428c87dbc191479f91ce50b5546dec67/FLAG22fc7a534 [2024-11-13 15:07:07,386 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/data/b5686aab2/428c87dbc191479f91ce50b5546dec67 [2024-11-13 15:07:07,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:07:07,391 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:07:07,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:07:07,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:07:07,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:07:07,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:07:07" (1/1) ... [2024-11-13 15:07:07,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5c45ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:07, skipping insertion in model container [2024-11-13 15:07:07,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:07:07" (1/1) ... [2024-11-13 15:07:07,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:07:07,944 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:07:08,012 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:07:08,022 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:07:08,031 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:07:08,044 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:07:08,092 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:07:08,093 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:07:08,097 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:07:08,098 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:07:08,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:07:08,123 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:07:08,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:07:08,346 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:07:08,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08 WrapperNode [2024-11-13 15:07:08,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:07:08,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:07:08,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:07:08,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:07:08,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08" (1/1) ... [2024-11-13 15:07:08,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08" (1/1) ... [2024-11-13 15:07:08,472 INFO L138 Inliner]: procedures = 210, calls = 222, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 862 [2024-11-13 15:07:08,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:07:08,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:07:08,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:07:08,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:07:08,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08" (1/1) ... [2024-11-13 15:07:08,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08" (1/1) ... [2024-11-13 15:07:08,499 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08" (1/1) ... [2024-11-13 15:07:08,577 INFO L175 MemorySlicer]: Split 206 memory accesses to 3 slices as follows [2, 34, 170]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 46 writes are split as follows [0, 4, 42]. [2024-11-13 15:07:08,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08" (1/1) ... [2024-11-13 15:07:08,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08" (1/1) ... [2024-11-13 15:07:08,633 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08" (1/1) ... [2024-11-13 15:07:08,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08" (1/1) ... [2024-11-13 15:07:08,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08" (1/1) ... [2024-11-13 15:07:08,652 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08" (1/1) ... [2024-11-13 15:07:08,659 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:07:08,660 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:07:08,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:07:08,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:07:08,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08" (1/1) ... [2024-11-13 15:07:08,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:07:08,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:08,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:07:08,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:07:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-13 15:07:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-13 15:07:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-13 15:07:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 15:07:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 15:07:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-13 15:07:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-13 15:07:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-13 15:07:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-13 15:07:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-13 15:07:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-13 15:07:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-13 15:07:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:07:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:07:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 15:07:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 15:07:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 15:07:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 15:07:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-13 15:07:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:07:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 15:07:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 15:07:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 15:07:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:07:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:07:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:07:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 15:07:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 15:07:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:07:08,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:07:09,065 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:07:09,067 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:07:09,070 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 15:07:09,143 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 15:07:09,177 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 15:07:13,806 INFO L? ?]: Removed 864 outVars from TransFormulas that were not future-live. [2024-11-13 15:07:13,807 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:07:13,847 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:07:13,851 INFO L316 CfgBuilder]: Removed 54 assume(true) statements. [2024-11-13 15:07:13,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:07:13 BoogieIcfgContainer [2024-11-13 15:07:13,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:07:13,858 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:07:13,858 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:07:13,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:07:13,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:07:07" (1/3) ... [2024-11-13 15:07:13,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2457eac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:07:13, skipping insertion in model container [2024-11-13 15:07:13,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:08" (2/3) ... [2024-11-13 15:07:13,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2457eac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:07:13, skipping insertion in model container [2024-11-13 15:07:13,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:07:13" (3/3) ... [2024-11-13 15:07:13,867 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test2-1.i [2024-11-13 15:07:13,884 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:07:13,886 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_nondet_test2-1.i that has 4 procedures, 869 locations, 1 initial locations, 33 loop locations, and 420 error locations. [2024-11-13 15:07:13,974 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:07:13,993 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;@296788ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:07:13,995 INFO L334 AbstractCegarLoop]: Starting to check reachability of 420 error locations. [2024-11-13 15:07:14,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 859 states, 437 states have (on average 2.196796338672769) internal successors, (960), 854 states have internal predecessors, (960), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:07:14,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-13 15:07:14,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:14,009 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-13 15:07:14,010 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr419ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:14,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:14,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1758107, now seen corresponding path program 1 times [2024-11-13 15:07:14,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:14,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593792561] [2024-11-13 15:07:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:14,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:14,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:14,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:14,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:07:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:14,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:07:14,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:14,385 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2024-11-13 15:07:14,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:14,393 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:14,394 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593792561] [2024-11-13 15:07:14,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593792561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:14,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:14,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:07:14,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115233986] [2024-11-13 15:07:14,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:14,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:07:14,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:14,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:07:14,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-13 15:07:14,444 INFO L87 Difference]: Start difference. First operand has 859 states, 437 states have (on average 2.196796338672769) internal successors, (960), 854 states have internal predecessors, (960), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:16,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:16,906 INFO L93 Difference]: Finished difference Result 1062 states and 1142 transitions. [2024-11-13 15:07:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:07:16,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-13 15:07:16,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:16,924 INFO L225 Difference]: With dead ends: 1062 [2024-11-13 15:07:16,924 INFO L226 Difference]: Without dead ends: 1059 [2024-11-13 15:07:16,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-13 15:07:16,929 INFO L432 NwaCegarLoop]: 788 mSDtfsCounter, 233 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1143 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:16,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1249 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 540 Invalid, 0 Unknown, 1143 Unchecked, 2.3s Time] [2024-11-13 15:07:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-11-13 15:07:17,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 847. [2024-11-13 15:07:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 431 states have (on average 2.0580046403712298) internal successors, (887), 842 states have internal predecessors, (887), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:07:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 893 transitions. [2024-11-13 15:07:17,022 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 893 transitions. Word has length 4 [2024-11-13 15:07:17,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:17,022 INFO L471 AbstractCegarLoop]: Abstraction has 847 states and 893 transitions. [2024-11-13 15:07:17,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:17,022 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 893 transitions. [2024-11-13 15:07:17,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-13 15:07:17,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:17,023 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-13 15:07:17,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 15:07:17,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:17,227 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:17,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:17,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-13 15:07:17,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:17,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258697073] [2024-11-13 15:07:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:17,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:17,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:17,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:17,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:07:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:17,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:07:17,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:17,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:07:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:17,440 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:17,440 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:17,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258697073] [2024-11-13 15:07:17,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258697073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:17,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:17,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:07:17,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861401353] [2024-11-13 15:07:17,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:17,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:07:17,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:17,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:07:17,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:17,442 INFO L87 Difference]: Start difference. First operand 847 states and 893 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:19,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:19,070 INFO L93 Difference]: Finished difference Result 844 states and 891 transitions. [2024-11-13 15:07:19,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:07:19,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-13 15:07:19,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:19,075 INFO L225 Difference]: With dead ends: 844 [2024-11-13 15:07:19,075 INFO L226 Difference]: Without dead ends: 844 [2024-11-13 15:07:19,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:19,076 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 775 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:19,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 550 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 15:07:19,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2024-11-13 15:07:19,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2024-11-13 15:07:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 439 states have (on average 2.0159453302961277) internal successors, (885), 839 states have internal predecessors, (885), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:07:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 891 transitions. [2024-11-13 15:07:19,136 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 891 transitions. Word has length 4 [2024-11-13 15:07:19,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:19,136 INFO L471 AbstractCegarLoop]: Abstraction has 844 states and 891 transitions. [2024-11-13 15:07:19,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 891 transitions. [2024-11-13 15:07:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-13 15:07:19,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:19,138 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-13 15:07:19,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:07:19,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:19,338 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:19,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:19,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-13 15:07:19,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:19,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049944972] [2024-11-13 15:07:19,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:19,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:19,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:19,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:19,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:07:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:19,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:07:19,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:19,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:07:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:19,508 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:19,508 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:19,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049944972] [2024-11-13 15:07:19,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049944972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:19,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:19,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:07:19,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538513473] [2024-11-13 15:07:19,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:19,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:07:19,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:07:19,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:19,510 INFO L87 Difference]: Start difference. First operand 844 states and 891 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:22,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:22,061 INFO L93 Difference]: Finished difference Result 1055 states and 1123 transitions. [2024-11-13 15:07:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:07:22,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-13 15:07:22,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:22,067 INFO L225 Difference]: With dead ends: 1055 [2024-11-13 15:07:22,067 INFO L226 Difference]: Without dead ends: 1055 [2024-11-13 15:07:22,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:22,069 INFO L432 NwaCegarLoop]: 788 mSDtfsCounter, 232 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:22,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1251 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-13 15:07:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2024-11-13 15:07:22,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 969. [2024-11-13 15:07:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 565 states have (on average 1.9716814159292035) internal successors, (1114), 964 states have internal predecessors, (1114), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:07:22,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1120 transitions. [2024-11-13 15:07:22,105 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1120 transitions. Word has length 4 [2024-11-13 15:07:22,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:22,106 INFO L471 AbstractCegarLoop]: Abstraction has 969 states and 1120 transitions. [2024-11-13 15:07:22,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:22,107 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1120 transitions. [2024-11-13 15:07:22,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 15:07:22,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:22,108 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:22,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:07:22,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:22,308 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:22,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:22,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1021429073, now seen corresponding path program 1 times [2024-11-13 15:07:22,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:22,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909623212] [2024-11-13 15:07:22,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:22,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:22,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:22,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:22,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:07:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:22,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:07:22,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:22,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:07:22,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:07:22,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:07:22,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2024-11-13 15:07:22,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:07:22,582 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 13 treesize of output 9 [2024-11-13 15:07:22,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:22,633 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:22,633 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:22,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909623212] [2024-11-13 15:07:22,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909623212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:22,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:22,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:07:22,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802379171] [2024-11-13 15:07:22,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:22,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:07:22,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:22,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:07:22,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:07:22,635 INFO L87 Difference]: Start difference. First operand 969 states and 1120 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:29,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:29,540 INFO L93 Difference]: Finished difference Result 2016 states and 2236 transitions. [2024-11-13 15:07:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:07:29,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-13 15:07:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:29,549 INFO L225 Difference]: With dead ends: 2016 [2024-11-13 15:07:29,549 INFO L226 Difference]: Without dead ends: 2016 [2024-11-13 15:07:29,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:29,550 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 1398 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:29,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 1030 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-13 15:07:29,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2024-11-13 15:07:29,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1155. [2024-11-13 15:07:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 751 states have (on average 1.9733688415446071) internal successors, (1482), 1148 states have internal predecessors, (1482), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1492 transitions. [2024-11-13 15:07:29,588 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1492 transitions. Word has length 8 [2024-11-13 15:07:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:29,588 INFO L471 AbstractCegarLoop]: Abstraction has 1155 states and 1492 transitions. [2024-11-13 15:07:29,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1492 transitions. [2024-11-13 15:07:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:07:29,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:29,589 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:29,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:07:29,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:29,797 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:29,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:29,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530194, now seen corresponding path program 1 times [2024-11-13 15:07:29,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:29,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729544992] [2024-11-13 15:07:29,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:29,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:29,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:29,807 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:29,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:07:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:29,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:07:29,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:29,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:07:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:29,970 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:29,971 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:29,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729544992] [2024-11-13 15:07:29,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729544992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:29,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:29,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:07:29,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472099480] [2024-11-13 15:07:29,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:29,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:07:29,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:29,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:07:29,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:29,973 INFO L87 Difference]: Start difference. First operand 1155 states and 1492 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:32,089 INFO L93 Difference]: Finished difference Result 1320 states and 1654 transitions. [2024-11-13 15:07:32,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:07:32,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-13 15:07:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:32,094 INFO L225 Difference]: With dead ends: 1320 [2024-11-13 15:07:32,095 INFO L226 Difference]: Without dead ends: 1320 [2024-11-13 15:07:32,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:32,096 INFO L432 NwaCegarLoop]: 664 mSDtfsCounter, 760 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:32,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 812 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 15:07:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2024-11-13 15:07:32,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1108. [2024-11-13 15:07:32,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 751 states have (on average 1.8788282290279628) internal successors, (1411), 1101 states have internal predecessors, (1411), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:32,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1421 transitions. [2024-11-13 15:07:32,126 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1421 transitions. Word has length 9 [2024-11-13 15:07:32,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:32,127 INFO L471 AbstractCegarLoop]: Abstraction has 1108 states and 1421 transitions. [2024-11-13 15:07:32,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:32,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1421 transitions. [2024-11-13 15:07:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:07:32,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:32,128 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:32,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:07:32,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:32,328 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:32,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:32,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530193, now seen corresponding path program 1 times [2024-11-13 15:07:32,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:32,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676289655] [2024-11-13 15:07:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:32,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:32,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:32,333 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:32,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:07:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:32,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:07:32,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:32,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:07:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:32,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:32,511 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:32,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676289655] [2024-11-13 15:07:32,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676289655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:32,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:32,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:07:32,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083923306] [2024-11-13 15:07:32,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:32,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:07:32,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:32,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:07:32,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:32,515 INFO L87 Difference]: Start difference. First operand 1108 states and 1421 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:35,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:35,114 INFO L93 Difference]: Finished difference Result 1578 states and 2045 transitions. [2024-11-13 15:07:35,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:07:35,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-13 15:07:35,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:35,120 INFO L225 Difference]: With dead ends: 1578 [2024-11-13 15:07:35,120 INFO L226 Difference]: Without dead ends: 1578 [2024-11-13 15:07:35,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:35,121 INFO L432 NwaCegarLoop]: 841 mSDtfsCounter, 513 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:35,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1156 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-13 15:07:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2024-11-13 15:07:35,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1170. [2024-11-13 15:07:35,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 823 states have (on average 1.8675577156743621) internal successors, (1537), 1163 states have internal predecessors, (1537), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1547 transitions. [2024-11-13 15:07:35,153 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1547 transitions. Word has length 9 [2024-11-13 15:07:35,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:35,154 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 1547 transitions. [2024-11-13 15:07:35,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1547 transitions. [2024-11-13 15:07:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 15:07:35,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:35,154 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:35,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:07:35,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:35,355 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr419ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:35,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1230536609, now seen corresponding path program 1 times [2024-11-13 15:07:35,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:35,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391629865] [2024-11-13 15:07:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:35,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:35,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:35,358 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:35,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:07:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:35,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:07:35,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:35,614 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_47| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47|)))) is different from true [2024-11-13 15:07:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:35,615 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:35,615 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:35,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391629865] [2024-11-13 15:07:35,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391629865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:35,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:35,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:07:35,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991176438] [2024-11-13 15:07:35,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:35,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:07:35,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:35,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:07:35,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-13 15:07:35,617 INFO L87 Difference]: Start difference. First operand 1170 states and 1547 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) [2024-11-13 15:07:37,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:37,289 INFO L93 Difference]: Finished difference Result 1383 states and 1780 transitions. [2024-11-13 15:07:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:07:37,290 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 [2024-11-13 15:07:37,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:37,296 INFO L225 Difference]: With dead ends: 1383 [2024-11-13 15:07:37,296 INFO L226 Difference]: Without dead ends: 1381 [2024-11-13 15:07:37,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-13 15:07:37,298 INFO L432 NwaCegarLoop]: 731 mSDtfsCounter, 226 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1056 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:37,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1181 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 464 Invalid, 0 Unknown, 1056 Unchecked, 1.6s Time] [2024-11-13 15:07:37,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2024-11-13 15:07:37,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1296. [2024-11-13 15:07:37,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 949 states have (on average 1.8609062170706006) internal successors, (1766), 1289 states have internal predecessors, (1766), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:37,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1776 transitions. [2024-11-13 15:07:37,341 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1776 transitions. Word has length 11 [2024-11-13 15:07:37,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:37,341 INFO L471 AbstractCegarLoop]: Abstraction has 1296 states and 1776 transitions. [2024-11-13 15:07:37,341 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) [2024-11-13 15:07:37,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1776 transitions. [2024-11-13 15:07:37,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 15:07:37,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:37,342 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:37,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:07:37,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:37,543 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:37,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1030029400, now seen corresponding path program 1 times [2024-11-13 15:07:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:37,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966474223] [2024-11-13 15:07:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:37,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:37,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:37,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:37,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:07:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:37,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:07:37,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:37,734 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:37,734 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:37,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966474223] [2024-11-13 15:07:37,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966474223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:37,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:37,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:07:37,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104544712] [2024-11-13 15:07:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:37,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:07:37,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:37,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:07:37,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:07:37,736 INFO L87 Difference]: Start difference. First operand 1296 states and 1776 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:40,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:40,158 INFO L93 Difference]: Finished difference Result 1285 states and 1719 transitions. [2024-11-13 15:07:40,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:07:40,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 15:07:40,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:40,163 INFO L225 Difference]: With dead ends: 1285 [2024-11-13 15:07:40,164 INFO L226 Difference]: Without dead ends: 1285 [2024-11-13 15:07:40,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:40,165 INFO L432 NwaCegarLoop]: 465 mSDtfsCounter, 774 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:40,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 880 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-13 15:07:40,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2024-11-13 15:07:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1273. [2024-11-13 15:07:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 949 states have (on average 1.7881981032665963) internal successors, (1697), 1266 states have internal predecessors, (1697), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:40,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1707 transitions. [2024-11-13 15:07:40,194 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1707 transitions. Word has length 14 [2024-11-13 15:07:40,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:40,194 INFO L471 AbstractCegarLoop]: Abstraction has 1273 states and 1707 transitions. [2024-11-13 15:07:40,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:40,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1707 transitions. [2024-11-13 15:07:40,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 15:07:40,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:40,195 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:40,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:07:40,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:40,400 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:40,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:40,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1030029401, now seen corresponding path program 1 times [2024-11-13 15:07:40,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:40,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064594764] [2024-11-13 15:07:40,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:40,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:40,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:40,403 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:40,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:07:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:40,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:07:40,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:40,546 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:40,547 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:40,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064594764] [2024-11-13 15:07:40,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064594764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:40,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:40,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:07:40,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461288232] [2024-11-13 15:07:40,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:40,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:07:40,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:40,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:07:40,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:40,548 INFO L87 Difference]: Start difference. First operand 1273 states and 1707 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2024-11-13 15:07:40,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:40,593 INFO L93 Difference]: Finished difference Result 1207 states and 1614 transitions. [2024-11-13 15:07:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:07:40,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 [2024-11-13 15:07:40,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:40,598 INFO L225 Difference]: With dead ends: 1207 [2024-11-13 15:07:40,598 INFO L226 Difference]: Without dead ends: 1207 [2024-11-13 15:07:40,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:40,599 INFO L432 NwaCegarLoop]: 758 mSDtfsCounter, 61 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:40,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1463 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:07:40,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2024-11-13 15:07:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1207. [2024-11-13 15:07:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 895 states have (on average 1.7921787709497208) internal successors, (1604), 1200 states have internal predecessors, (1604), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1614 transitions. [2024-11-13 15:07:40,625 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1614 transitions. Word has length 14 [2024-11-13 15:07:40,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:40,626 INFO L471 AbstractCegarLoop]: Abstraction has 1207 states and 1614 transitions. [2024-11-13 15:07:40,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2024-11-13 15:07:40,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1614 transitions. [2024-11-13 15:07:40,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 15:07:40,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:40,627 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:40,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 15:07:40,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:40,831 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:40,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:40,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2015799346, now seen corresponding path program 1 times [2024-11-13 15:07:40,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:40,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752970152] [2024-11-13 15:07:40,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:40,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:40,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:40,834 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:40,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:07:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:40,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:07:40,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:40,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:40,988 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:40,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752970152] [2024-11-13 15:07:40,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752970152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:40,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:40,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:07:40,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424991280] [2024-11-13 15:07:40,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:40,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:07:40,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:40,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:07:40,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:07:40,990 INFO L87 Difference]: Start difference. First operand 1207 states and 1614 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) [2024-11-13 15:07:41,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:41,079 INFO L93 Difference]: Finished difference Result 1176 states and 1548 transitions. [2024-11-13 15:07:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:07:41,080 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 [2024-11-13 15:07:41,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:41,083 INFO L225 Difference]: With dead ends: 1176 [2024-11-13 15:07:41,084 INFO L226 Difference]: Without dead ends: 1176 [2024-11-13 15:07:41,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:41,084 INFO L432 NwaCegarLoop]: 720 mSDtfsCounter, 45 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:41,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2137 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:07:41,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-13 15:07:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1176. [2024-11-13 15:07:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 871 states have (on average 1.7657864523536166) internal successors, (1538), 1169 states have internal predecessors, (1538), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1548 transitions. [2024-11-13 15:07:41,122 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1548 transitions. Word has length 16 [2024-11-13 15:07:41,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:41,122 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1548 transitions. [2024-11-13 15:07:41,122 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) [2024-11-13 15:07:41,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1548 transitions. [2024-11-13 15:07:41,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 15:07:41,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:41,123 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:41,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:07:41,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:41,324 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:41,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:41,324 INFO L85 PathProgramCache]: Analyzing trace with hash -179577158, now seen corresponding path program 1 times [2024-11-13 15:07:41,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:41,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006709468] [2024-11-13 15:07:41,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:41,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:41,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:41,326 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:41,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:07:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:41,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:07:41,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:41,538 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:41,538 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:41,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006709468] [2024-11-13 15:07:41,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006709468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:41,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:41,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:07:41,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940965820] [2024-11-13 15:07:41,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:41,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:07:41,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:41,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:07:41,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:07:41,539 INFO L87 Difference]: Start difference. First operand 1176 states and 1548 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) [2024-11-13 15:07:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:43,721 INFO L93 Difference]: Finished difference Result 1204 states and 1512 transitions. [2024-11-13 15:07:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:07:43,721 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 [2024-11-13 15:07:43,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:43,725 INFO L225 Difference]: With dead ends: 1204 [2024-11-13 15:07:43,725 INFO L226 Difference]: Without dead ends: 1204 [2024-11-13 15:07:43,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:43,726 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 727 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:43,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1028 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 15:07:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2024-11-13 15:07:43,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1153. [2024-11-13 15:07:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 871 states have (on average 1.7129735935706085) internal successors, (1492), 1146 states have internal predecessors, (1492), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:43,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1502 transitions. [2024-11-13 15:07:43,748 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1502 transitions. Word has length 19 [2024-11-13 15:07:43,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:43,748 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1502 transitions. [2024-11-13 15:07:43,748 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) [2024-11-13 15:07:43,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1502 transitions. [2024-11-13 15:07:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 15:07:43,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:43,749 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:43,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 15:07:43,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:43,950 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:43,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:43,950 INFO L85 PathProgramCache]: Analyzing trace with hash -179577157, now seen corresponding path program 1 times [2024-11-13 15:07:43,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:43,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734485491] [2024-11-13 15:07:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:43,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:43,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:43,952 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:43,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:07:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:44,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:07:44,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:44,115 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:44,115 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:44,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734485491] [2024-11-13 15:07:44,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734485491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:44,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:44,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:07:44,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304960138] [2024-11-13 15:07:44,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:44,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:07:44,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:44,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:07:44,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:44,120 INFO L87 Difference]: Start difference. First operand 1153 states and 1502 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2024-11-13 15:07:44,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:44,160 INFO L93 Difference]: Finished difference Result 1105 states and 1440 transitions. [2024-11-13 15:07:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:07:44,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 [2024-11-13 15:07:44,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:44,164 INFO L225 Difference]: With dead ends: 1105 [2024-11-13 15:07:44,164 INFO L226 Difference]: Without dead ends: 1105 [2024-11-13 15:07:44,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:44,165 INFO L432 NwaCegarLoop]: 676 mSDtfsCounter, 61 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:44,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1299 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:07:44,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2024-11-13 15:07:44,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1105. [2024-11-13 15:07:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 835 states have (on average 1.7125748502994012) internal successors, (1430), 1098 states have internal predecessors, (1430), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1440 transitions. [2024-11-13 15:07:44,185 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1440 transitions. Word has length 19 [2024-11-13 15:07:44,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:44,186 INFO L471 AbstractCegarLoop]: Abstraction has 1105 states and 1440 transitions. [2024-11-13 15:07:44,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2024-11-13 15:07:44,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1440 transitions. [2024-11-13 15:07:44,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 15:07:44,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:44,187 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] [2024-11-13 15:07:44,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:07:44,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:44,391 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:44,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:44,391 INFO L85 PathProgramCache]: Analyzing trace with hash -774960908, now seen corresponding path program 1 times [2024-11-13 15:07:44,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:44,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328426476] [2024-11-13 15:07:44,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:44,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:44,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:44,394 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:44,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:07:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:44,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:07:44,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:44,583 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:44,583 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:44,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328426476] [2024-11-13 15:07:44,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328426476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:44,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:44,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:07:44,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940962768] [2024-11-13 15:07:44,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:44,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:07:44,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:44,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:07:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:07:44,585 INFO L87 Difference]: Start difference. First operand 1105 states and 1440 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2024-11-13 15:07:44,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:44,696 INFO L93 Difference]: Finished difference Result 1082 states and 1396 transitions. [2024-11-13 15:07:44,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:07:44,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 [2024-11-13 15:07:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:44,700 INFO L225 Difference]: With dead ends: 1082 [2024-11-13 15:07:44,700 INFO L226 Difference]: Without dead ends: 1082 [2024-11-13 15:07:44,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:44,701 INFO L432 NwaCegarLoop]: 638 mSDtfsCounter, 45 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:44,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1891 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:07:44,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2024-11-13 15:07:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1082. [2024-11-13 15:07:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 819 states have (on average 1.6923076923076923) internal successors, (1386), 1075 states have internal predecessors, (1386), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1396 transitions. [2024-11-13 15:07:44,732 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1396 transitions. Word has length 21 [2024-11-13 15:07:44,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:44,732 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1396 transitions. [2024-11-13 15:07:44,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2024-11-13 15:07:44,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1396 transitions. [2024-11-13 15:07:44,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 15:07:44,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:44,733 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:44,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 15:07:44,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:44,934 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr369REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:44,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:44,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1100440288, now seen corresponding path program 1 times [2024-11-13 15:07:44,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:44,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705415074] [2024-11-13 15:07:44,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:44,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:44,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:44,938 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:44,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:07:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:45,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:07:45,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:45,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:07:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:45,351 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:45,351 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705415074] [2024-11-13 15:07:45,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705415074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:45,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:45,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:07:45,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950128421] [2024-11-13 15:07:45,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:45,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:07:45,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:45,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:07:45,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:07:45,353 INFO L87 Difference]: Start difference. First operand 1082 states and 1396 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:47,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:47,825 INFO L93 Difference]: Finished difference Result 1125 states and 1398 transitions. [2024-11-13 15:07:47,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:07:47,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2024-11-13 15:07:47,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:47,829 INFO L225 Difference]: With dead ends: 1125 [2024-11-13 15:07:47,829 INFO L226 Difference]: Without dead ends: 1125 [2024-11-13 15:07:47,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:47,830 INFO L432 NwaCegarLoop]: 610 mSDtfsCounter, 160 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:47,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1268 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-13 15:07:47,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2024-11-13 15:07:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1082. [2024-11-13 15:07:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 819 states have (on average 1.6874236874236874) internal successors, (1382), 1075 states have internal predecessors, (1382), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:47,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1392 transitions. [2024-11-13 15:07:47,848 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1392 transitions. Word has length 30 [2024-11-13 15:07:47,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:47,848 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1392 transitions. [2024-11-13 15:07:47,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:47,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1392 transitions. [2024-11-13 15:07:47,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 15:07:47,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:47,849 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:47,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:07:48,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:48,050 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:48,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2010845566, now seen corresponding path program 1 times [2024-11-13 15:07:48,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:48,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347756154] [2024-11-13 15:07:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:48,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:48,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:48,053 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:48,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:07:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:48,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:07:48,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:48,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:07:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:48,504 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:48,504 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:48,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347756154] [2024-11-13 15:07:48,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347756154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:48,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:48,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:07:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045753253] [2024-11-13 15:07:48,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:48,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:07:48,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:48,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:07:48,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:07:48,506 INFO L87 Difference]: Start difference. First operand 1082 states and 1392 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:51,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:51,300 INFO L93 Difference]: Finished difference Result 1400 states and 1738 transitions. [2024-11-13 15:07:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:07:51,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-13 15:07:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:51,305 INFO L225 Difference]: With dead ends: 1400 [2024-11-13 15:07:51,305 INFO L226 Difference]: Without dead ends: 1400 [2024-11-13 15:07:51,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:51,306 INFO L432 NwaCegarLoop]: 664 mSDtfsCounter, 360 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:51,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1333 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 15:07:51,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2024-11-13 15:07:51,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1078. [2024-11-13 15:07:51,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 819 states have (on average 1.6776556776556777) internal successors, (1374), 1071 states have internal predecessors, (1374), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1384 transitions. [2024-11-13 15:07:51,322 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1384 transitions. Word has length 35 [2024-11-13 15:07:51,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:51,323 INFO L471 AbstractCegarLoop]: Abstraction has 1078 states and 1384 transitions. [2024-11-13 15:07:51,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:51,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1384 transitions. [2024-11-13 15:07:51,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 15:07:51,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:51,324 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:51,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:07:51,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:51,525 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr376REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:51,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:51,525 INFO L85 PathProgramCache]: Analyzing trace with hash -907790537, now seen corresponding path program 1 times [2024-11-13 15:07:51,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:51,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937411777] [2024-11-13 15:07:51,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:51,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:51,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:51,529 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:51,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:07:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:51,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:07:51,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:52,028 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:52,028 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:52,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937411777] [2024-11-13 15:07:52,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937411777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:52,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:52,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:07:52,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348769194] [2024-11-13 15:07:52,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:52,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:07:52,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:52,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:07:52,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:52,032 INFO L87 Difference]: Start difference. First operand 1078 states and 1384 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:52,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:52,213 INFO L93 Difference]: Finished difference Result 1229 states and 1510 transitions. [2024-11-13 15:07:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:07:52,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-13 15:07:52,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:52,220 INFO L225 Difference]: With dead ends: 1229 [2024-11-13 15:07:52,220 INFO L226 Difference]: Without dead ends: 1229 [2024-11-13 15:07:52,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:07:52,222 INFO L432 NwaCegarLoop]: 662 mSDtfsCounter, 91 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:52,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1271 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:07:52,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2024-11-13 15:07:52,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1216. [2024-11-13 15:07:52,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 957 states have (on average 1.5632183908045978) internal successors, (1496), 1209 states have internal predecessors, (1496), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1506 transitions. [2024-11-13 15:07:52,244 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1506 transitions. Word has length 44 [2024-11-13 15:07:52,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:52,245 INFO L471 AbstractCegarLoop]: Abstraction has 1216 states and 1506 transitions. [2024-11-13 15:07:52,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1506 transitions. [2024-11-13 15:07:52,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 15:07:52,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:52,248 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:52,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 15:07:52,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:52,449 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:52,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:52,450 INFO L85 PathProgramCache]: Analyzing trace with hash 317956477, now seen corresponding path program 1 times [2024-11-13 15:07:52,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:52,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579157604] [2024-11-13 15:07:52,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:52,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:52,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:52,454 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:52,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:07:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:52,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:07:52,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:52,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:52,671 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:52,671 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:52,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579157604] [2024-11-13 15:07:52,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579157604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:52,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:52,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:07:52,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631768698] [2024-11-13 15:07:52,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:52,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:07:52,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:52,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:07:52,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:07:52,673 INFO L87 Difference]: Start difference. First operand 1216 states and 1506 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:52,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:52,765 INFO L93 Difference]: Finished difference Result 1186 states and 1456 transitions. [2024-11-13 15:07:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:07:52,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-13 15:07:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:52,770 INFO L225 Difference]: With dead ends: 1186 [2024-11-13 15:07:52,770 INFO L226 Difference]: Without dead ends: 1186 [2024-11-13 15:07:52,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:52,771 INFO L432 NwaCegarLoop]: 636 mSDtfsCounter, 27 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:52,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1871 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:07:52,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2024-11-13 15:07:52,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2024-11-13 15:07:52,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 927 states have (on average 1.5598705501618122) internal successors, (1446), 1179 states have internal predecessors, (1446), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1456 transitions. [2024-11-13 15:07:52,791 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1456 transitions. Word has length 50 [2024-11-13 15:07:52,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:52,791 INFO L471 AbstractCegarLoop]: Abstraction has 1186 states and 1456 transitions. [2024-11-13 15:07:52,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:52,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1456 transitions. [2024-11-13 15:07:52,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 15:07:52,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:52,793 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:52,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 15:07:52,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:52,993 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:52,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:52,994 INFO L85 PathProgramCache]: Analyzing trace with hash -843799935, now seen corresponding path program 1 times [2024-11-13 15:07:52,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:52,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661209615] [2024-11-13 15:07:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:52,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:52,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:52,997 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:52,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:07:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:53,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:07:53,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:53,285 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:53,285 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:53,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661209615] [2024-11-13 15:07:53,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661209615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:53,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:53,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:07:53,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993334940] [2024-11-13 15:07:53,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:53,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:07:53,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:53,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:07:53,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:07:53,287 INFO L87 Difference]: Start difference. First operand 1186 states and 1456 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:53,367 INFO L93 Difference]: Finished difference Result 1168 states and 1426 transitions. [2024-11-13 15:07:53,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:07:53,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-13 15:07:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:53,371 INFO L225 Difference]: With dead ends: 1168 [2024-11-13 15:07:53,372 INFO L226 Difference]: Without dead ends: 1168 [2024-11-13 15:07:53,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:53,373 INFO L432 NwaCegarLoop]: 632 mSDtfsCounter, 21 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:53,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1865 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:07:53,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-13 15:07:53,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2024-11-13 15:07:53,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 909 states have (on average 1.5577557755775577) internal successors, (1416), 1161 states have internal predecessors, (1416), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1426 transitions. [2024-11-13 15:07:53,390 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1426 transitions. Word has length 54 [2024-11-13 15:07:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:53,390 INFO L471 AbstractCegarLoop]: Abstraction has 1168 states and 1426 transitions. [2024-11-13 15:07:53,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1426 transitions. [2024-11-13 15:07:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 15:07:53,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:53,391 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:53,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 15:07:53,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:53,592 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:53,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:53,592 INFO L85 PathProgramCache]: Analyzing trace with hash 184278729, now seen corresponding path program 1 times [2024-11-13 15:07:53,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:53,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005119673] [2024-11-13 15:07:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:53,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:53,594 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:53,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:07:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:53,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:07:53,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:53,806 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 [2024-11-13 15:07:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:53,889 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:53,889 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005119673] [2024-11-13 15:07:53,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005119673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:53,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:53,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:07:53,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661185729] [2024-11-13 15:07:53,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:53,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:07:53,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:53,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:07:53,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:07:53,891 INFO L87 Difference]: Start difference. First operand 1168 states and 1426 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:54,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:54,303 INFO L93 Difference]: Finished difference Result 1740 states and 2077 transitions. [2024-11-13 15:07:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:07:54,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-13 15:07:54,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:54,308 INFO L225 Difference]: With dead ends: 1740 [2024-11-13 15:07:54,308 INFO L226 Difference]: Without dead ends: 1737 [2024-11-13 15:07:54,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:07:54,309 INFO L432 NwaCegarLoop]: 838 mSDtfsCounter, 1210 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:54,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 3108 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:07:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2024-11-13 15:07:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1114. [2024-11-13 15:07:54,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 855 states have (on average 1.590643274853801) internal successors, (1360), 1107 states have internal predecessors, (1360), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1370 transitions. [2024-11-13 15:07:54,328 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1370 transitions. Word has length 58 [2024-11-13 15:07:54,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:54,329 INFO L471 AbstractCegarLoop]: Abstraction has 1114 states and 1370 transitions. [2024-11-13 15:07:54,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1370 transitions. [2024-11-13 15:07:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 15:07:54,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:54,330 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:54,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 15:07:54,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:54,530 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:54,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:54,531 INFO L85 PathProgramCache]: Analyzing trace with hash 194486837, now seen corresponding path program 1 times [2024-11-13 15:07:54,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:54,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150916405] [2024-11-13 15:07:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:54,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:54,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:54,533 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:54,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:07:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:54,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:07:54,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:54,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:07:55,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:07:55,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:07:55,576 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:07:55,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:07:55,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:55,578 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:55,579 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:55,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150916405] [2024-11-13 15:07:55,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150916405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:55,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:55,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:07:55,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041122187] [2024-11-13 15:07:55,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:55,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:07:55,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:55,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:07:55,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:55,581 INFO L87 Difference]: Start difference. First operand 1114 states and 1370 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 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) [2024-11-13 15:07:57,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:57,953 INFO L93 Difference]: Finished difference Result 1076 states and 1318 transitions. [2024-11-13 15:07:57,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:07:57,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 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) Word has length 62 [2024-11-13 15:07:57,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:57,957 INFO L225 Difference]: With dead ends: 1076 [2024-11-13 15:07:57,957 INFO L226 Difference]: Without dead ends: 1076 [2024-11-13 15:07:57,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:07:57,959 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 575 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:57,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 410 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-13 15:07:57,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2024-11-13 15:07:57,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1004. [2024-11-13 15:07:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 783 states have (on average 1.4840357598978289) internal successors, (1162), 997 states have internal predecessors, (1162), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:07:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1172 transitions. [2024-11-13 15:07:57,972 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1172 transitions. Word has length 62 [2024-11-13 15:07:57,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:57,973 INFO L471 AbstractCegarLoop]: Abstraction has 1004 states and 1172 transitions. [2024-11-13 15:07:57,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 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) [2024-11-13 15:07:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1172 transitions. [2024-11-13 15:07:57,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 15:07:57,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:57,973 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:57,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:07:58,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:58,174 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:07:58,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:58,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1964575352, now seen corresponding path program 1 times [2024-11-13 15:07:58,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:58,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055405537] [2024-11-13 15:07:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:58,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:58,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:58,176 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:58,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:07:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:58,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:07:58,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:58,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:07:58,448 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 19 treesize of output 1 [2024-11-13 15:07:58,477 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 23 treesize of output 11 [2024-11-13 15:07:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:58,489 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:58,489 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:58,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055405537] [2024-11-13 15:07:58,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055405537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:58,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:58,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:07:58,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558255622] [2024-11-13 15:07:58,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:58,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:07:58,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:58,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:07:58,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:07:58,490 INFO L87 Difference]: Start difference. First operand 1004 states and 1172 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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) [2024-11-13 15:08:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:00,682 INFO L93 Difference]: Finished difference Result 1003 states and 1170 transitions. [2024-11-13 15:08:00,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:08:00,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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) Word has length 67 [2024-11-13 15:08:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:00,685 INFO L225 Difference]: With dead ends: 1003 [2024-11-13 15:08:00,685 INFO L226 Difference]: Without dead ends: 1003 [2024-11-13 15:08:00,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:08:00,686 INFO L432 NwaCegarLoop]: 605 mSDtfsCounter, 2 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:00,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1590 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 15:08:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2024-11-13 15:08:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 1003. [2024-11-13 15:08:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 783 states have (on average 1.4814814814814814) internal successors, (1160), 996 states have internal predecessors, (1160), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:08:00,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1170 transitions. [2024-11-13 15:08:00,702 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1170 transitions. Word has length 67 [2024-11-13 15:08:00,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:00,702 INFO L471 AbstractCegarLoop]: Abstraction has 1003 states and 1170 transitions. [2024-11-13 15:08:00,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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) [2024-11-13 15:08:00,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1170 transitions. [2024-11-13 15:08:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 15:08:00,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:00,703 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:00,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 15:08:00,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:00,904 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:08:00,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:00,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1964575353, now seen corresponding path program 1 times [2024-11-13 15:08:00,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:08:00,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292883665] [2024-11-13 15:08:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:00,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:00,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:08:00,908 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:08:00,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 15:08:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:01,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:08:01,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:08:01,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:08:01,208 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 19 treesize of output 1 [2024-11-13 15:08:01,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:08:01,296 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 21 treesize of output 9 [2024-11-13 15:08:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:01,325 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:08:01,326 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:08:01,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292883665] [2024-11-13 15:08:01,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292883665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:08:01,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:08:01,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:08:01,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957590787] [2024-11-13 15:08:01,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:08:01,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:08:01,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:08:01,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:08:01,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:08:01,327 INFO L87 Difference]: Start difference. First operand 1003 states and 1170 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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) [2024-11-13 15:08:04,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:04,154 INFO L93 Difference]: Finished difference Result 1002 states and 1168 transitions. [2024-11-13 15:08:04,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:08:04,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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) Word has length 67 [2024-11-13 15:08:04,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:04,157 INFO L225 Difference]: With dead ends: 1002 [2024-11-13 15:08:04,157 INFO L226 Difference]: Without dead ends: 1002 [2024-11-13 15:08:04,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:08:04,161 INFO L432 NwaCegarLoop]: 605 mSDtfsCounter, 1 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:04,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1562 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 15:08:04,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2024-11-13 15:08:04,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 1002. [2024-11-13 15:08:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 781 states have (on average 1.4827144686299616) internal successors, (1158), 995 states have internal predecessors, (1158), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:08:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1168 transitions. [2024-11-13 15:08:04,179 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1168 transitions. Word has length 67 [2024-11-13 15:08:04,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:04,179 INFO L471 AbstractCegarLoop]: Abstraction has 1002 states and 1168 transitions. [2024-11-13 15:08:04,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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) [2024-11-13 15:08:04,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1168 transitions. [2024-11-13 15:08:04,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 15:08:04,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:04,182 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:04,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 15:08:04,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:04,382 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:08:04,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:04,383 INFO L85 PathProgramCache]: Analyzing trace with hash 259326303, now seen corresponding path program 1 times [2024-11-13 15:08:04,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:08:04,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356297298] [2024-11-13 15:08:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:04,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:04,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:08:04,385 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:08:04,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:08:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:04,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:08:04,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:08:04,660 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 19 treesize of output 1 [2024-11-13 15:08:04,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 15:08:04,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:04,783 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:08:04,783 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:08:04,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356297298] [2024-11-13 15:08:04,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356297298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:08:04,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:08:04,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:08:04,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989079803] [2024-11-13 15:08:04,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:08:04,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:08:04,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:08:04,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:08:04,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:08:04,785 INFO L87 Difference]: Start difference. First operand 1002 states and 1168 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:08:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:07,120 INFO L93 Difference]: Finished difference Result 1020 states and 1194 transitions. [2024-11-13 15:08:07,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:08:07,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2024-11-13 15:08:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:07,124 INFO L225 Difference]: With dead ends: 1020 [2024-11-13 15:08:07,125 INFO L226 Difference]: Without dead ends: 1020 [2024-11-13 15:08:07,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:08:07,125 INFO L432 NwaCegarLoop]: 597 mSDtfsCounter, 6 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:07,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2219 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-13 15:08:07,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2024-11-13 15:08:07,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1011. [2024-11-13 15:08:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 789 states have (on average 1.4816223067173637) internal successors, (1169), 1002 states have internal predecessors, (1169), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-13 15:08:07,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1184 transitions. [2024-11-13 15:08:07,142 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1184 transitions. Word has length 75 [2024-11-13 15:08:07,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:07,143 INFO L471 AbstractCegarLoop]: Abstraction has 1011 states and 1184 transitions. [2024-11-13 15:08:07,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:08:07,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1184 transitions. [2024-11-13 15:08:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 15:08:07,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:07,144 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:07,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 15:08:07,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:07,344 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:08:07,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:07,345 INFO L85 PathProgramCache]: Analyzing trace with hash 259326304, now seen corresponding path program 1 times [2024-11-13 15:08:07,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:08:07,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815150718] [2024-11-13 15:08:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:07,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:07,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:08:07,348 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:08:07,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:08:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:07,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:08:07,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:08:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:07,592 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:08:07,592 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:08:07,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815150718] [2024-11-13 15:08:07,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815150718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:08:07,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:08:07,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:08:07,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154453322] [2024-11-13 15:08:07,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:08:07,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:08:07,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:08:07,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:08:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:08:07,595 INFO L87 Difference]: Start difference. First operand 1011 states and 1184 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:08:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:07,657 INFO L93 Difference]: Finished difference Result 1005 states and 1172 transitions. [2024-11-13 15:08:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:08:07,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2024-11-13 15:08:07,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:07,665 INFO L225 Difference]: With dead ends: 1005 [2024-11-13 15:08:07,665 INFO L226 Difference]: Without dead ends: 1005 [2024-11-13 15:08:07,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:08:07,666 INFO L432 NwaCegarLoop]: 605 mSDtfsCounter, 0 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:07,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1810 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:08:07,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2024-11-13 15:08:07,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1005. [2024-11-13 15:08:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 783 states have (on average 1.4827586206896552) internal successors, (1161), 998 states have internal predecessors, (1161), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:08:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1172 transitions. [2024-11-13 15:08:07,691 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1172 transitions. Word has length 75 [2024-11-13 15:08:07,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:07,691 INFO L471 AbstractCegarLoop]: Abstraction has 1005 states and 1172 transitions. [2024-11-13 15:08:07,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:08:07,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1172 transitions. [2024-11-13 15:08:07,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 15:08:07,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:07,692 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:07,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 15:08:07,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:07,893 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:08:07,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:07,894 INFO L85 PathProgramCache]: Analyzing trace with hash 728344840, now seen corresponding path program 1 times [2024-11-13 15:08:07,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:08:07,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088117386] [2024-11-13 15:08:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:07,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:07,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:08:07,897 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:08:07,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:08:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:08,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:08:08,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:08:08,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:08,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:08:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:08,242 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:08:08,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088117386] [2024-11-13 15:08:08,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088117386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:08:08,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:08:08,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-13 15:08:08,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082806031] [2024-11-13 15:08:08,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:08:08,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:08:08,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:08:08,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:08:08,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:08:08,244 INFO L87 Difference]: Start difference. First operand 1005 states and 1172 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:08:08,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:08,461 INFO L93 Difference]: Finished difference Result 1017 states and 1189 transitions. [2024-11-13 15:08:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:08:08,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2024-11-13 15:08:08,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:08,465 INFO L225 Difference]: With dead ends: 1017 [2024-11-13 15:08:08,465 INFO L226 Difference]: Without dead ends: 1017 [2024-11-13 15:08:08,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:08:08,466 INFO L432 NwaCegarLoop]: 605 mSDtfsCounter, 5 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:08,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 3011 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:08:08,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2024-11-13 15:08:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1015. [2024-11-13 15:08:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 792 states have (on average 1.4848484848484849) internal successors, (1176), 1007 states have internal predecessors, (1176), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:08:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1187 transitions. [2024-11-13 15:08:08,483 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1187 transitions. Word has length 76 [2024-11-13 15:08:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:08,484 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1187 transitions. [2024-11-13 15:08:08,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:08:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1187 transitions. [2024-11-13 15:08:08,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 15:08:08,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:08,485 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:08,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 15:08:08,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:08,685 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:08:08,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:08,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1154079841, now seen corresponding path program 2 times [2024-11-13 15:08:08,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:08:08,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116691158] [2024-11-13 15:08:08,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:08:08,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:08,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:08:08,688 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:08:08,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:08:35,564 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:08:35,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:08:35,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:08:35,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:08:35,785 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:08:35,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:08:35,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:08:36,057 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:08:36,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 15:08:36,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-13 15:08:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:08:36,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:08:36,257 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 15:08:36,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-13 15:08:36,315 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:08:36,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116691158] [2024-11-13 15:08:36,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116691158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:08:36,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [513923684] [2024-11-13 15:08:36,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:08:36,315 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:08:36,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:08:36,326 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:08:36,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-13 15:08:37,593 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:08:37,593 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:08:37,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:08:37,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:08:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:37,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:08:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:38,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [513923684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:08:38,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:08:38,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-13 15:08:38,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503496352] [2024-11-13 15:08:38,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:08:38,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 15:08:38,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:08:38,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 15:08:38,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=551, Unknown=8, NotChecked=0, Total=650 [2024-11-13 15:08:38,256 INFO L87 Difference]: Start difference. First operand 1015 states and 1187 transitions. Second operand has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:08:48,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:48,872 INFO L93 Difference]: Finished difference Result 1031 states and 1209 transitions. [2024-11-13 15:08:48,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 15:08:48,875 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2024-11-13 15:08:48,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:48,878 INFO L225 Difference]: With dead ends: 1031 [2024-11-13 15:08:48,878 INFO L226 Difference]: Without dead ends: 1027 [2024-11-13 15:08:48,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=416, Invalid=2330, Unknown=10, NotChecked=0, Total=2756 [2024-11-13 15:08:48,879 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 588 mSDsluCounter, 3900 mSDsCounter, 0 mSdLazyCounter, 3957 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 4233 SdHoareTripleChecker+Invalid, 3985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:48,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 4233 Invalid, 3985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3957 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2024-11-13 15:08:48,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2024-11-13 15:08:48,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1023. [2024-11-13 15:08:48,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 801 states have (on average 1.4806491885143571) internal successors, (1186), 1015 states have internal predecessors, (1186), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:08:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1197 transitions. [2024-11-13 15:08:48,895 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1197 transitions. Word has length 79 [2024-11-13 15:08:48,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:48,896 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1197 transitions. [2024-11-13 15:08:48,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:08:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1197 transitions. [2024-11-13 15:08:48,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-13 15:08:48,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:48,897 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:48,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-13 15:08:49,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2024-11-13 15:08:49,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 15:08:49,297 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:08:49,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:49,298 INFO L85 PathProgramCache]: Analyzing trace with hash 846854912, now seen corresponding path program 1 times [2024-11-13 15:08:49,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:08:49,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591197714] [2024-11-13 15:08:49,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:49,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:49,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:08:49,300 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:08:49,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 15:08:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:49,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:08:49,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:08:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:49,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:08:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:50,706 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:08:50,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591197714] [2024-11-13 15:08:50,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591197714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:08:50,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:08:50,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-13 15:08:50,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945159714] [2024-11-13 15:08:50,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:08:50,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:08:50,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:08:50,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:08:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:08:50,708 INFO L87 Difference]: Start difference. First operand 1023 states and 1197 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:08:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:54,053 INFO L93 Difference]: Finished difference Result 1047 states and 1236 transitions. [2024-11-13 15:08:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 15:08:54,054 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2024-11-13 15:08:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:54,056 INFO L225 Difference]: With dead ends: 1047 [2024-11-13 15:08:54,056 INFO L226 Difference]: Without dead ends: 1041 [2024-11-13 15:08:54,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 15:08:54,058 INFO L432 NwaCegarLoop]: 605 mSDtfsCounter, 25 mSDsluCounter, 7220 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 7825 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:54,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 7825 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 15:08:54,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2024-11-13 15:08:54,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1041. [2024-11-13 15:08:54,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 819 states have (on average 1.4761904761904763) internal successors, (1209), 1033 states have internal predecessors, (1209), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:08:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1220 transitions. [2024-11-13 15:08:54,087 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1220 transitions. Word has length 85 [2024-11-13 15:08:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:54,087 INFO L471 AbstractCegarLoop]: Abstraction has 1041 states and 1220 transitions. [2024-11-13 15:08:54,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:08:54,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1220 transitions. [2024-11-13 15:08:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-13 15:08:54,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:54,089 INFO L215 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:54,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 15:08:54,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:54,289 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:08:54,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:54,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1139970496, now seen corresponding path program 2 times [2024-11-13 15:08:54,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:08:54,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774927026] [2024-11-13 15:08:54,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:08:54,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:54,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:08:54,292 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:08:54,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 15:09:12,920 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:09:12,920 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:09:12,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 15:09:12,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:13,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:09:13,139 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:09:13,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:09:13,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:09:13,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:09:13,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:09:13,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:09:13,954 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:09:13,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:09:13,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:09:14,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:09:14,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:09:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 15:09:14,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:09:14,635 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1261 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1261) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_1261 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1262 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1261) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1262) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:09:14,640 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:09:14,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774927026] [2024-11-13 15:09:14,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774927026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:09:14,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1306154903] [2024-11-13 15:09:14,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:09:14,640 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:09:14,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:09:14,642 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:09:14,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-13 15:09:16,146 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:09:16,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:09:16,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 15:09:16,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:17,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:09:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:19,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1306154903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:09:19,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:09:19,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-13 15:09:19,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833071548] [2024-11-13 15:09:19,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:09:19,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-13 15:09:19,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:09:19,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-13 15:09:19,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2024-11-13 15:09:19,756 INFO L87 Difference]: Start difference. First operand 1041 states and 1220 transitions. Second operand has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:10:00,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:10:00,731 INFO L93 Difference]: Finished difference Result 1084 states and 1292 transitions. [2024-11-13 15:10:00,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-13 15:10:00,732 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 97 [2024-11-13 15:10:00,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:10:00,734 INFO L225 Difference]: With dead ends: 1084 [2024-11-13 15:10:00,735 INFO L226 Difference]: Without dead ends: 1076 [2024-11-13 15:10:00,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3088 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=3106, Invalid=14987, Unknown=1, NotChecked=266, Total=18360 [2024-11-13 15:10:00,739 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 606 mSDsluCounter, 8738 mSDsCounter, 0 mSdLazyCounter, 10802 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 9071 SdHoareTripleChecker+Invalid, 10855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 10802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:10:00,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 9071 Invalid, 10855 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 10802 Invalid, 0 Unknown, 0 Unchecked, 31.2s Time] [2024-11-13 15:10:00,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2024-11-13 15:10:00,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1074. [2024-11-13 15:10:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 853 states have (on average 1.4642438452520516) internal successors, (1249), 1066 states have internal predecessors, (1249), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:10:00,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1260 transitions. [2024-11-13 15:10:00,755 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1260 transitions. Word has length 97 [2024-11-13 15:10:00,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:10:00,755 INFO L471 AbstractCegarLoop]: Abstraction has 1074 states and 1260 transitions. [2024-11-13 15:10:00,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:10:00,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1260 transitions. [2024-11-13 15:10:00,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-13 15:10:00,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:10:00,757 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:10:00,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-13 15:10:00,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2024-11-13 15:10:01,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 15:10:01,158 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:10:01,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:10:01,158 INFO L85 PathProgramCache]: Analyzing trace with hash -210307108, now seen corresponding path program 1 times [2024-11-13 15:10:01,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:10:01,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796764835] [2024-11-13 15:10:01,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:10:01,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:10:01,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:10:01,160 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:10:01,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 15:10:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:10:01,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-13 15:10:01,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:10:01,770 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:10:01,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:10:01,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:10:02,450 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:10:02,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 15:10:02,591 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:10:02,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 15:10:02,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-13 15:10:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:10:02,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:10:02,871 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1830 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1830) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 15:10:03,323 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-13 15:10:03,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2024-11-13 15:10:03,335 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1830 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1876 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1876))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1830)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-11-13 15:10:03,337 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:10:03,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796764835] [2024-11-13 15:10:03,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796764835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:10:03,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [106744874] [2024-11-13 15:10:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:10:03,338 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:10:03,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:10:03,339 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:10:03,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-13 15:10:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:10:06,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-13 15:10:06,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:10:06,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:10:06,725 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 15:10:06,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-13 15:10:06,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:10:06,996 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 24 treesize of output 12 [2024-11-13 15:10:08,089 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:10:08,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 15:10:08,314 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:10:08,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 15:10:08,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-13 15:10:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:10:08,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:10:08,930 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2300 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1830 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2300))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1830)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:10:08,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [106744874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:10:08,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:10:08,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-11-13 15:10:08,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163481931] [2024-11-13 15:10:08,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:10:08,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:10:08,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:10:08,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:10:08,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=346, Unknown=10, NotChecked=120, Total=552 [2024-11-13 15:10:08,934 INFO L87 Difference]: Start difference. First operand 1074 states and 1260 transitions. Second operand has 19 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:10:17,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:10:17,691 INFO L93 Difference]: Finished difference Result 1075 states and 1260 transitions. [2024-11-13 15:10:17,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:10:17,691 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 122 [2024-11-13 15:10:17,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:10:17,693 INFO L225 Difference]: With dead ends: 1075 [2024-11-13 15:10:17,693 INFO L226 Difference]: Without dead ends: 1075 [2024-11-13 15:10:17,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=97, Invalid=457, Unknown=10, NotChecked=138, Total=702 [2024-11-13 15:10:17,694 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 522 mSDsluCounter, 3861 mSDsCounter, 0 mSdLazyCounter, 3689 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 4193 SdHoareTripleChecker+Invalid, 3697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:10:17,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 4193 Invalid, 3697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3689 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-13 15:10:17,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2024-11-13 15:10:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1073. [2024-11-13 15:10:17,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 853 states have (on average 1.4618991793669402) internal successors, (1247), 1065 states have internal predecessors, (1247), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:10:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1258 transitions. [2024-11-13 15:10:17,709 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1258 transitions. Word has length 122 [2024-11-13 15:10:17,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:10:17,710 INFO L471 AbstractCegarLoop]: Abstraction has 1073 states and 1258 transitions. [2024-11-13 15:10:17,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:10:17,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1258 transitions. [2024-11-13 15:10:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-13 15:10:17,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:10:17,711 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:10:17,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-11-13 15:10:17,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-13 15:10:18,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:10:18,112 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:10:18,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:10:18,113 INFO L85 PathProgramCache]: Analyzing trace with hash -210307107, now seen corresponding path program 1 times [2024-11-13 15:10:18,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:10:18,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303276357] [2024-11-13 15:10:18,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:10:18,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:10:18,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:10:18,116 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:10:18,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 15:10:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:10:18,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-13 15:10:18,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:10:18,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:10:18,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:10:18,802 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:10:18,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:10:18,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:10:18,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:10:18,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:10:18,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:10:19,986 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:10:19,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:10:20,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:10:20,117 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:10:20,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:10:20,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:10:20,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:10:20,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:10:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:10:20,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:10:20,342 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2725 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2724 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2725) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2724) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_2725 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2725) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32))))))) is different from false [2024-11-13 15:10:20,378 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_2725 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2724 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2725) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2724) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_2725 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_2725) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2024-11-13 15:10:21,782 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2817 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2816 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2725 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2816) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2817) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2725) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_2817 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2816 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2725 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2724 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2817))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2816) .cse2 v_ArrVal_2725) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_2724) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 15:10:21,792 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:10:21,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303276357] [2024-11-13 15:10:21,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303276357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:10:21,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1514516706] [2024-11-13 15:10:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:10:21,793 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:10:21,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:10:21,795 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:10:21,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-13 15:12:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:12:05,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-13 15:12:05,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:12:05,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:12:06,085 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:12:06,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:12:06,092 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 6 treesize of output 5 [2024-11-13 15:12:06,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:12:06,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:12:06,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:12:06,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:12:07,049 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:12:07,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:12:07,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:12:07,140 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:12:07,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:12:07,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:12:07,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:12:07,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:12:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:12:07,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:12:07,255 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3242 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3241 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3242) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3241) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3242 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3242) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-13 15:12:07,279 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_3242 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3241 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_3242) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_3241) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_3242 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_3242) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2024-11-13 15:12:08,747 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3333 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3242 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3333) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3334) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3242) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3333 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3242 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3241 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3334))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3333) .cse2 v_ArrVal_3242) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_3241) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 15:12:08,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1514516706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:12:08,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:12:08,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-13 15:12:08,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824391022] [2024-11-13 15:12:08,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:12:08,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:12:08,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:12:08,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:12:08,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=110, Unknown=6, NotChecked=150, Total=306 [2024-11-13 15:12:08,755 INFO L87 Difference]: Start difference. First operand 1073 states and 1258 transitions. Second operand has 10 states, 8 states have (on average 9.75) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:12:13,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:12:13,801 INFO L93 Difference]: Finished difference Result 1072 states and 1256 transitions. [2024-11-13 15:12:13,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:12:13,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.75) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-13 15:12:13,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:12:13,804 INFO L225 Difference]: With dead ends: 1072 [2024-11-13 15:12:13,805 INFO L226 Difference]: Without dead ends: 1072 [2024-11-13 15:12:13,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=219, Unknown=6, NotChecked=210, Total=506 [2024-11-13 15:12:13,805 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 527 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:12:13,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 1181 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-13 15:12:13,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2024-11-13 15:12:13,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2024-11-13 15:12:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 853 states have (on average 1.4595545134818289) internal successors, (1245), 1064 states have internal predecessors, (1245), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:12:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1256 transitions. [2024-11-13 15:12:13,817 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1256 transitions. Word has length 122 [2024-11-13 15:12:13,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:12:13,817 INFO L471 AbstractCegarLoop]: Abstraction has 1072 states and 1256 transitions. [2024-11-13 15:12:13,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.75) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:12:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1256 transitions. [2024-11-13 15:12:13,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-13 15:12:13,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:12:13,818 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:12:13,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-13 15:12:14,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2024-11-13 15:12:14,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 15:12:14,219 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:12:14,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:12:14,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1098547238, now seen corresponding path program 1 times [2024-11-13 15:12:14,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:12:14,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80373606] [2024-11-13 15:12:14,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:12:14,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:12:14,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:12:14,222 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:12:14,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 15:12:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:12:14,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 15:12:14,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:12:14,885 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:12:14,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:12:14,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:12:15,456 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:12:15,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 15:12:15,553 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:12:15,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 15:12:15,629 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:12:15,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 15:12:15,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-13 15:12:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:12:15,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:12:15,761 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3717 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3717) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 15:12:15,781 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3716 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3717 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3716))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3717)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:12:15,791 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3716 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3717 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3716))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3717)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:12:16,231 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-11-13 15:12:16,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2024-11-13 15:12:16,242 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3716 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3717 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3763))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3716)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3717)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-13 15:12:16,245 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:12:16,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80373606] [2024-11-13 15:12:16,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80373606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:12:16,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [399835998] [2024-11-13 15:12:16,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:12:16,245 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:12:16,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:12:16,247 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:12:16,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-13 15:12:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:12:24,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 15:12:24,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:12:24,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:12:25,096 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 15:12:25,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-13 15:12:25,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:12:25,292 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 24 treesize of output 12 [2024-11-13 15:12:26,258 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:12:26,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 15:12:26,423 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:12:26,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 15:12:26,529 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:12:26,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 15:12:26,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-13 15:12:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:12:26,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:12:26,630 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4148 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4148) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-13 15:12:26,638 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4148 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4148) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 15:12:26,652 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4148 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4147 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4147))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4148)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:12:26,663 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4148 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4147 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4147))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4148)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:12:27,090 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4194 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4148 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4147 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4194))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4147)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4148)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-13 15:12:27,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [399835998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:12:27,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:12:27,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2024-11-13 15:12:27,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147575995] [2024-11-13 15:12:27,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:12:27,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:12:27,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:12:27,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:12:27,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=422, Unknown=19, NotChecked=450, Total=992 [2024-11-13 15:12:27,096 INFO L87 Difference]: Start difference. First operand 1072 states and 1256 transitions. Second operand has 21 states, 18 states have (on average 5.888888888888889) internal successors, (106), 20 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:12:35,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:12:35,431 INFO L93 Difference]: Finished difference Result 1073 states and 1256 transitions. [2024-11-13 15:12:35,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:12:35,432 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.888888888888889) internal successors, (106), 20 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 125 [2024-11-13 15:12:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:12:35,435 INFO L225 Difference]: With dead ends: 1073 [2024-11-13 15:12:35,435 INFO L226 Difference]: Without dead ends: 1073 [2024-11-13 15:12:35,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=545, Unknown=19, NotChecked=504, Total=1190 [2024-11-13 15:12:35,436 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 519 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 3417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:12:35,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 3868 Invalid, 3417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-13 15:12:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2024-11-13 15:12:35,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1071. [2024-11-13 15:12:35,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 853 states have (on average 1.4572098475967175) internal successors, (1243), 1063 states have internal predecessors, (1243), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:12:35,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1254 transitions. [2024-11-13 15:12:35,448 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1254 transitions. Word has length 125 [2024-11-13 15:12:35,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:12:35,449 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1254 transitions. [2024-11-13 15:12:35,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.888888888888889) internal successors, (106), 20 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:12:35,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1254 transitions. [2024-11-13 15:12:35,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-13 15:12:35,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:12:35,450 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:12:35,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-13 15:12:35,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 15:12:35,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:12:35,854 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-13 15:12:35,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:12:35,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1098547239, now seen corresponding path program 1 times [2024-11-13 15:12:35,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:12:35,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877058712] [2024-11-13 15:12:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:12:35,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:12:35,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:12:35,857 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:12:35,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 15:12:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:12:36,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-13 15:12:36,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:12:36,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:12:36,594 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:12:36,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:12:36,600 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 6 treesize of output 5 [2024-11-13 15:12:36,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:12:36,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:12:36,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 15:12:36,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:12:37,463 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:12:37,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:12:37,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:12:37,582 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:12:37,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:12:37,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:12:37,691 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:12:37,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:12:37,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 15:12:37,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 15:12:37,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 15:12:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:12:37,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:12:37,921 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4627 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4626 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4626) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4627) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4626 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4626) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2024-11-13 15:12:37,946 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4626 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_4626) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_4627 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4626 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_4626) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_4627) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-13 15:12:38,001 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4626 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4625 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4624 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4624) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4625) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4626) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_4627 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4626 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4625 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4624 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4625))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4624) .cse2 v_ArrVal_4626) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_4627) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 15:12:38,054 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4627 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4626 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4625 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4624 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_4625))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_4624) .cse1 v_ArrVal_4626) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_4627) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_4626 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4625 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4624 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_4624) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_4625) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4626) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-13 15:12:39,636 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4627 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4626 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4625 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4624 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4719 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4718 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4719))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_4625))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4718) .cse0 v_ArrVal_4624) .cse1 v_ArrVal_4626) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_4627) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_4626 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4625 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4624 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4719 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4718 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4719))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4718) .cse6 v_ArrVal_4624) (select (select (store .cse7 .cse6 v_ArrVal_4625) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4626))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-13 15:12:39,644 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:12:39,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877058712] [2024-11-13 15:12:39,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877058712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:12:39,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [487522290] [2024-11-13 15:12:39,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:12:39,645 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:12:39,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:12:39,647 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:12:39,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf6a2f4-be1e-485a-8411-dbfebd28d3c8/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process