./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/linux-hlist-middle-data.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/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_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/linux-hlist-middle-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/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 64bit --witnessprinter.graph.data.programhash 5c4e150ef364d23aeab0a373d461c06d560c0fa17d69d62b5545e1af197924d4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:41:08,202 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:41:08,262 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-13 14:41:08,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:41:08,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:41:08,289 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:41:08,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:41:08,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:41:08,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:41:08,290 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:41:08,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:41:08,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:41:08,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:41:08,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:41:08,291 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:41:08,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:41:08,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:41:08,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:41:08,292 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:41:08,292 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:41:08,292 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:41:08,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:41:08,292 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:41:08,292 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:41:08,292 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:41:08,292 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:41:08,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:41:08,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:41:08,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:41:08,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:41:08,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:41:08,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:41:08,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:41:08,293 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:41:08,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:41:08,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:41:08,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:41:08,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:41:08,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:41:08,294 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_a5df94db-1829-46a4-bc8a-423be31ef147/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c4e150ef364d23aeab0a373d461c06d560c0fa17d69d62b5545e1af197924d4 [2024-11-13 14:41:08,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:41:08,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:41:08,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:41:08,571 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:41:08,572 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:41:08,573 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/memsafety-broom/linux-hlist-middle-data.i Unable to find full path for "g++" [2024-11-13 14:41:10,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:41:10,939 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:41:10,940 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/sv-benchmarks/c/memsafety-broom/linux-hlist-middle-data.i [2024-11-13 14:41:10,976 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/data/3be21130c/507d09cab5d24433a39cc0eedb85a3ea/FLAG90b15d8eb [2024-11-13 14:41:11,001 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/data/3be21130c/507d09cab5d24433a39cc0eedb85a3ea [2024-11-13 14:41:11,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:41:11,009 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:41:11,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:41:11,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:41:11,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:41:11,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3002b624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11, skipping insertion in model container [2024-11-13 14:41:11,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,088 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:41:11,478 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 14:41:11,483 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 14:41:11,486 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 14:41:11,487 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 14:41:11,494 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 14:41:11,495 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 14:41:11,503 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 14:41:11,506 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 14:41:11,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:41:11,524 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:41:11,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:41:11,613 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:41:11,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11 WrapperNode [2024-11-13 14:41:11,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:41:11,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:41:11,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:41:11,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:41:11,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,656 INFO L138 Inliner]: procedures = 124, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 157 [2024-11-13 14:41:11,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:41:11,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:41:11,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:41:11,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:41:11,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,669 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,698 INFO L175 MemorySlicer]: Split 20 memory accesses to 1 slices as follows [20]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 13 writes are split as follows [13]. [2024-11-13 14:41:11,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,715 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:41:11,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:41:11,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:41:11,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:41:11,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2024-11-13 14:41:11,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:41:11,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:41:11,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:41:11,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:41:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:41:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:41:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:41:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:41:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:41:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:41:11,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:41:11,934 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:41:11,936 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:41:12,473 INFO L? ?]: Removed 158 outVars from TransFormulas that were not future-live. [2024-11-13 14:41:12,474 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:41:12,494 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:41:12,495 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 14:41:12,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:41:12 BoogieIcfgContainer [2024-11-13 14:41:12,495 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:41:12,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:41:12,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:41:12,504 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:41:12,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:41:11" (1/3) ... [2024-11-13 14:41:12,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d72c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:41:12, skipping insertion in model container [2024-11-13 14:41:12,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (2/3) ... [2024-11-13 14:41:12,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d72c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:41:12, skipping insertion in model container [2024-11-13 14:41:12,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:41:12" (3/3) ... [2024-11-13 14:41:12,508 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-hlist-middle-data.i [2024-11-13 14:41:12,540 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:41:12,542 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-hlist-middle-data.i that has 1 procedures, 112 locations, 1 initial locations, 3 loop locations, and 47 error locations. [2024-11-13 14:41:12,592 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:41:12,607 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;@706205a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:41:12,607 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-11-13 14:41:12,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 64 states have (on average 1.9375) internal successors, (124), 111 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 14:41:12,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:12,619 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 14:41:12,620 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:12,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2024-11-13 14:41:12,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:12,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039657661] [2024-11-13 14:41:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:12,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:12,834 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 14:41:12,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:12,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039657661] [2024-11-13 14:41:12,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039657661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:12,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:12,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:41:12,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412453185] [2024-11-13 14:41:12,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:12,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:41:12,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:12,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:41:12,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:41:12,882 INFO L87 Difference]: Start difference. First operand has 112 states, 64 states have (on average 1.9375) internal successors, (124), 111 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 14:41:13,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:13,079 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2024-11-13 14:41:13,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:41:13,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-13 14:41:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:13,089 INFO L225 Difference]: With dead ends: 111 [2024-11-13 14:41:13,089 INFO L226 Difference]: Without dead ends: 109 [2024-11-13 14:41:13,091 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 14:41:13,095 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 37 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:13,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 148 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:41:13,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-13 14:41:13,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-13 14:41:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 63 states have (on average 1.873015873015873) internal successors, (118), 108 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2024-11-13 14:41:13,135 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 3 [2024-11-13 14:41:13,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:13,136 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2024-11-13 14:41:13,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 14:41:13,136 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2024-11-13 14:41:13,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 14:41:13,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:13,137 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 14:41:13,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:41:13,137 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:13,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:13,138 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-11-13 14:41:13,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:13,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341702341] [2024-11-13 14:41:13,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:13,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:13,290 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 14:41:13,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:13,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341702341] [2024-11-13 14:41:13,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341702341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:13,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:13,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:41:13,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263833122] [2024-11-13 14:41:13,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:13,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:41:13,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:13,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:41:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:41:13,293 INFO L87 Difference]: Start difference. First operand 109 states and 118 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 14:41:13,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:13,441 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2024-11-13 14:41:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:41:13,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-13 14:41:13,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:13,443 INFO L225 Difference]: With dead ends: 111 [2024-11-13 14:41:13,443 INFO L226 Difference]: Without dead ends: 111 [2024-11-13 14:41:13,443 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 14:41:13,444 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 3 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:13,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 187 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:41:13,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-13 14:41:13,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2024-11-13 14:41:13,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.8571428571428572) internal successors, (117), 107 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 14:41:13,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2024-11-13 14:41:13,460 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 3 [2024-11-13 14:41:13,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:13,462 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2024-11-13 14:41:13,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 14:41:13,463 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2024-11-13 14:41:13,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 14:41:13,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:13,463 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:41:13,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:41:13,463 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:13,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:13,464 INFO L85 PathProgramCache]: Analyzing trace with hash 889449195, now seen corresponding path program 1 times [2024-11-13 14:41:13,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:13,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532857457] [2024-11-13 14:41:13,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:13,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:13,642 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 14:41:13,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:13,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532857457] [2024-11-13 14:41:13,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532857457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:13,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:13,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:41:13,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588970291] [2024-11-13 14:41:13,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:13,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:41:13,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:13,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:41:13,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:41:13,644 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:13,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:13,787 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2024-11-13 14:41:13,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:41:13,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-13 14:41:13,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:13,788 INFO L225 Difference]: With dead ends: 106 [2024-11-13 14:41:13,788 INFO L226 Difference]: Without dead ends: 106 [2024-11-13 14:41:13,788 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 14:41:13,789 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 1 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:13,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 178 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:41:13,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-13 14:41:13,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-13 14:41:13,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 105 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2024-11-13 14:41:13,804 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 6 [2024-11-13 14:41:13,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:13,804 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2024-11-13 14:41:13,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:13,805 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2024-11-13 14:41:13,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 14:41:13,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:13,807 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:41:13,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:41:13,808 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:13,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:13,808 INFO L85 PathProgramCache]: Analyzing trace with hash 889449196, now seen corresponding path program 1 times [2024-11-13 14:41:13,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:13,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423645253] [2024-11-13 14:41:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:13,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:14,034 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 14:41:14,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:14,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423645253] [2024-11-13 14:41:14,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423645253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:14,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:14,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:41:14,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093317939] [2024-11-13 14:41:14,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:14,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:41:14,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:14,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:41:14,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:41:14,036 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:14,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:14,152 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-11-13 14:41:14,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:41:14,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-13 14:41:14,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:14,153 INFO L225 Difference]: With dead ends: 104 [2024-11-13 14:41:14,153 INFO L226 Difference]: Without dead ends: 104 [2024-11-13 14:41:14,154 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 14:41:14,154 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 1 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:14,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 184 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:41:14,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-13 14:41:14,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-13 14:41:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 63 states have (on average 1.7936507936507937) internal successors, (113), 103 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:14,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 113 transitions. [2024-11-13 14:41:14,170 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 113 transitions. Word has length 6 [2024-11-13 14:41:14,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:14,173 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 113 transitions. [2024-11-13 14:41:14,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 113 transitions. [2024-11-13 14:41:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 14:41:14,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:14,174 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:14,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:41:14,174 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:14,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash 62167193, now seen corresponding path program 1 times [2024-11-13 14:41:14,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:14,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080255782] [2024-11-13 14:41:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:14,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:14,314 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 14:41:14,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:14,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080255782] [2024-11-13 14:41:14,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080255782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:14,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:14,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:41:14,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023421331] [2024-11-13 14:41:14,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:14,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:41:14,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:14,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:41:14,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:41:14,316 INFO L87 Difference]: Start difference. First operand 104 states and 113 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 14:41:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:14,506 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2024-11-13 14:41:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:41:14,507 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 14:41:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:14,507 INFO L225 Difference]: With dead ends: 103 [2024-11-13 14:41:14,507 INFO L226 Difference]: Without dead ends: 103 [2024-11-13 14:41:14,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:41:14,508 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 30 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 265 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 14:41:14,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 265 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:41:14,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-13 14:41:14,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-13 14:41:14,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.7777777777777777) internal successors, (112), 102 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:14,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2024-11-13 14:41:14,515 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 8 [2024-11-13 14:41:14,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:14,515 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2024-11-13 14:41:14,515 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 14:41:14,515 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2024-11-13 14:41:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 14:41:14,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:14,515 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:14,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:41:14,516 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:14,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash 62167194, now seen corresponding path program 1 times [2024-11-13 14:41:14,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:14,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978265738] [2024-11-13 14:41:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:14,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:14,771 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 14:41:14,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:14,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978265738] [2024-11-13 14:41:14,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978265738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:14,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:14,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:41:14,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699497992] [2024-11-13 14:41:14,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:14,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:41:14,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:14,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:41:14,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:41:14,774 INFO L87 Difference]: Start difference. First operand 103 states and 112 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 14:41:14,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:14,952 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2024-11-13 14:41:14,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:41:14,954 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 14:41:14,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:14,954 INFO L225 Difference]: With dead ends: 102 [2024-11-13 14:41:14,955 INFO L226 Difference]: Without dead ends: 102 [2024-11-13 14:41:14,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:41:14,956 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 30 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:14,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 283 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:41:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-13 14:41:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-13 14:41:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 63 states have (on average 1.7619047619047619) internal successors, (111), 101 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2024-11-13 14:41:14,968 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 8 [2024-11-13 14:41:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:14,968 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2024-11-13 14:41:14,968 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 14:41:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2024-11-13 14:41:14,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 14:41:14,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:14,969 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:14,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:41:14,969 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:14,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1927707434, now seen corresponding path program 1 times [2024-11-13 14:41:14,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:14,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817663109] [2024-11-13 14:41:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:14,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:15,115 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 14:41:15,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:15,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817663109] [2024-11-13 14:41:15,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817663109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:15,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:15,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:41:15,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126394983] [2024-11-13 14:41:15,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:15,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:41:15,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:15,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:41:15,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:41:15,117 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 14:41:15,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:15,234 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2024-11-13 14:41:15,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:41:15,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 14:41:15,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:15,236 INFO L225 Difference]: With dead ends: 100 [2024-11-13 14:41:15,236 INFO L226 Difference]: Without dead ends: 100 [2024-11-13 14:41:15,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:41:15,237 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 3 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:15,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 259 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:41:15,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-13 14:41:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-13 14:41:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 63 states have (on average 1.7301587301587302) internal successors, (109), 99 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:15,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2024-11-13 14:41:15,249 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 9 [2024-11-13 14:41:15,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:15,252 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2024-11-13 14:41:15,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 14:41:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2024-11-13 14:41:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 14:41:15,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:15,253 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:15,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:41:15,253 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:15,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:15,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1927707435, now seen corresponding path program 1 times [2024-11-13 14:41:15,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:15,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334137060] [2024-11-13 14:41:15,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:15,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:15,385 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 14:41:15,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:15,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334137060] [2024-11-13 14:41:15,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334137060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:15,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:15,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:41:15,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444676660] [2024-11-13 14:41:15,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:15,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:41:15,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:15,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:41:15,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:41:15,390 INFO L87 Difference]: Start difference. First operand 100 states and 109 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 14:41:15,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:15,476 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2024-11-13 14:41:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:41:15,477 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 14:41:15,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:15,477 INFO L225 Difference]: With dead ends: 98 [2024-11-13 14:41:15,478 INFO L226 Difference]: Without dead ends: 98 [2024-11-13 14:41:15,478 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 14:41:15,478 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 3 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:15,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 168 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:41:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-13 14:41:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-13 14:41:15,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 63 states have (on average 1.6984126984126984) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2024-11-13 14:41:15,484 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 9 [2024-11-13 14:41:15,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:15,484 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2024-11-13 14:41:15,484 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 14:41:15,488 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2024-11-13 14:41:15,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 14:41:15,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:15,488 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:15,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:41:15,489 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:15,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:15,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1467939180, now seen corresponding path program 1 times [2024-11-13 14:41:15,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:15,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208398479] [2024-11-13 14:41:15,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:15,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:15,746 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 14:41:15,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:15,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208398479] [2024-11-13 14:41:15,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208398479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:15,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:15,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:41:15,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380893050] [2024-11-13 14:41:15,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:15,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:41:15,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:41:15,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:41:15,748 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:15,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:15,894 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2024-11-13 14:41:15,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:41:15,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 14:41:15,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:15,895 INFO L225 Difference]: With dead ends: 96 [2024-11-13 14:41:15,895 INFO L226 Difference]: Without dead ends: 96 [2024-11-13 14:41:15,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:41:15,896 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 32 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:15,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 198 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:41:15,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-13 14:41:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-13 14:41:15,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.6666666666666667) internal successors, (105), 95 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 14:41:15,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2024-11-13 14:41:15,905 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 13 [2024-11-13 14:41:15,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:15,905 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2024-11-13 14:41:15,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2024-11-13 14:41:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 14:41:15,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:15,906 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:15,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:41:15,906 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:15,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:15,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1467939181, now seen corresponding path program 1 times [2024-11-13 14:41:15,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:15,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749126964] [2024-11-13 14:41:15,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:15,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:16,202 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 14:41:16,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:16,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749126964] [2024-11-13 14:41:16,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749126964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:16,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:16,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:41:16,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575508490] [2024-11-13 14:41:16,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:16,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:41:16,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:16,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:41:16,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:41:16,204 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:16,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:16,362 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2024-11-13 14:41:16,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:41:16,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 14:41:16,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:16,363 INFO L225 Difference]: With dead ends: 94 [2024-11-13 14:41:16,363 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 14:41:16,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:41:16,364 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 53 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:16,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 204 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:41:16,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 14:41:16,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-13 14:41:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 63 states have (on average 1.6349206349206349) internal successors, (103), 93 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 14:41:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2024-11-13 14:41:16,368 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 13 [2024-11-13 14:41:16,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:16,368 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2024-11-13 14:41:16,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:16,369 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2024-11-13 14:41:16,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 14:41:16,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:16,369 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:16,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:41:16,370 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:16,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:16,370 INFO L85 PathProgramCache]: Analyzing trace with hash -107116413, now seen corresponding path program 1 times [2024-11-13 14:41:16,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:16,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373935051] [2024-11-13 14:41:16,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:16,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:16,460 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 14:41:16,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:16,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373935051] [2024-11-13 14:41:16,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373935051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:16,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:16,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:41:16,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190810648] [2024-11-13 14:41:16,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:16,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:41:16,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:16,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:41:16,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:41:16,462 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:16,697 INFO L93 Difference]: Finished difference Result 133 states and 146 transitions. [2024-11-13 14:41:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:41:16,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 14:41:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:16,699 INFO L225 Difference]: With dead ends: 133 [2024-11-13 14:41:16,700 INFO L226 Difference]: Without dead ends: 133 [2024-11-13 14:41:16,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:41:16,701 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 78 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:16,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 256 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:41:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-13 14:41:16,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 101. [2024-11-13 14:41:16,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 71 states have (on average 1.6338028169014085) internal successors, (116), 100 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 14:41:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2024-11-13 14:41:16,713 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 14 [2024-11-13 14:41:16,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:16,713 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2024-11-13 14:41:16,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2024-11-13 14:41:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 14:41:16,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:16,714 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:16,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:41:16,715 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:16,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:16,715 INFO L85 PathProgramCache]: Analyzing trace with hash -107116412, now seen corresponding path program 1 times [2024-11-13 14:41:16,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:16,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894029188] [2024-11-13 14:41:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:16,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:16,972 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 14:41:16,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:16,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894029188] [2024-11-13 14:41:16,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894029188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:16,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:16,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 14:41:16,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298287318] [2024-11-13 14:41:16,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:16,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:41:16,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:16,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:41:16,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:41:16,978 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:17,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:17,181 INFO L93 Difference]: Finished difference Result 116 states and 135 transitions. [2024-11-13 14:41:17,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:41:17,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 14:41:17,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:17,183 INFO L225 Difference]: With dead ends: 116 [2024-11-13 14:41:17,183 INFO L226 Difference]: Without dead ends: 116 [2024-11-13 14:41:17,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:41:17,184 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 4 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:17,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 649 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:41:17,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-13 14:41:17,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2024-11-13 14:41:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 80 states have (on average 1.5875) internal successors, (127), 109 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2024-11-13 14:41:17,189 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 14 [2024-11-13 14:41:17,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:17,189 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2024-11-13 14:41:17,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2024-11-13 14:41:17,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 14:41:17,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:17,190 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:17,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:41:17,190 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:17,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:17,193 INFO L85 PathProgramCache]: Analyzing trace with hash -107114971, now seen corresponding path program 1 times [2024-11-13 14:41:17,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:17,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93255707] [2024-11-13 14:41:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:17,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:17,486 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 14:41:17,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:17,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93255707] [2024-11-13 14:41:17,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93255707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:17,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:17,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:41:17,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872380680] [2024-11-13 14:41:17,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:17,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:41:17,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:17,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:41:17,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:41:17,488 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 14:41:17,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:17,631 INFO L93 Difference]: Finished difference Result 112 states and 128 transitions. [2024-11-13 14:41:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:41:17,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 14:41:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:17,632 INFO L225 Difference]: With dead ends: 112 [2024-11-13 14:41:17,632 INFO L226 Difference]: Without dead ends: 112 [2024-11-13 14:41:17,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:41:17,633 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 2 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:17,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 508 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:41:17,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-13 14:41:17,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2024-11-13 14:41:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 78 states have (on average 1.5897435897435896) internal successors, (124), 107 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2024-11-13 14:41:17,637 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 14 [2024-11-13 14:41:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:17,637 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2024-11-13 14:41:17,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 14:41:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2024-11-13 14:41:17,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 14:41:17,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:17,638 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:17,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:41:17,639 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:17,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:17,639 INFO L85 PathProgramCache]: Analyzing trace with hash -105269370, now seen corresponding path program 1 times [2024-11-13 14:41:17,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:17,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864468781] [2024-11-13 14:41:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:17,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:17,812 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 14:41:17,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:17,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864468781] [2024-11-13 14:41:17,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864468781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:17,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:17,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:41:17,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267904321] [2024-11-13 14:41:17,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:17,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:41:17,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:17,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:41:17,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:41:17,814 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:17,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:17,998 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2024-11-13 14:41:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:41:17,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 14:41:17,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:17,999 INFO L225 Difference]: With dead ends: 106 [2024-11-13 14:41:17,999 INFO L226 Difference]: Without dead ends: 106 [2024-11-13 14:41:17,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:41:18,000 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 79 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:18,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 251 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:41:18,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-13 14:41:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-13 14:41:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 105 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:18,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2024-11-13 14:41:18,004 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 14 [2024-11-13 14:41:18,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:18,004 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2024-11-13 14:41:18,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:18,004 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2024-11-13 14:41:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 14:41:18,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:18,005 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:18,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:41:18,005 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:18,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:18,006 INFO L85 PathProgramCache]: Analyzing trace with hash -105267929, now seen corresponding path program 1 times [2024-11-13 14:41:18,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:18,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289947575] [2024-11-13 14:41:18,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:18,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:18,074 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 14:41:18,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:18,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289947575] [2024-11-13 14:41:18,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289947575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:18,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:18,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:41:18,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383378310] [2024-11-13 14:41:18,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:18,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:41:18,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:18,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:41:18,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:41:18,076 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:18,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:18,101 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2024-11-13 14:41:18,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:41:18,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 14:41:18,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:18,103 INFO L225 Difference]: With dead ends: 108 [2024-11-13 14:41:18,103 INFO L226 Difference]: Without dead ends: 108 [2024-11-13 14:41:18,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:41:18,104 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:18,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 283 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:41:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-13 14:41:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-13 14:41:18,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 80 states have (on average 1.5375) internal successors, (123), 107 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 14:41:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2024-11-13 14:41:18,108 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 14 [2024-11-13 14:41:18,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:18,108 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2024-11-13 14:41:18,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:18,108 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2024-11-13 14:41:18,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 14:41:18,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:18,109 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:18,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:41:18,110 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:18,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1940279021, now seen corresponding path program 1 times [2024-11-13 14:41:18,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:18,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915455911] [2024-11-13 14:41:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:18,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:41:18,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:18,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915455911] [2024-11-13 14:41:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915455911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:18,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:18,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:41:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291798522] [2024-11-13 14:41:18,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:18,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:41:18,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:18,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:41:18,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:41:18,227 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:18,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:18,349 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2024-11-13 14:41:18,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:41:18,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-13 14:41:18,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:18,351 INFO L225 Difference]: With dead ends: 106 [2024-11-13 14:41:18,351 INFO L226 Difference]: Without dead ends: 106 [2024-11-13 14:41:18,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:41:18,352 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 7 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:18,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 272 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:41:18,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-13 14:41:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-13 14:41:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.5125) internal successors, (121), 105 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2024-11-13 14:41:18,356 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 15 [2024-11-13 14:41:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:18,356 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2024-11-13 14:41:18,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2024-11-13 14:41:18,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 14:41:18,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:18,357 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:18,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:41:18,358 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:18,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:18,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1940279022, now seen corresponding path program 1 times [2024-11-13 14:41:18,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:18,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068690612] [2024-11-13 14:41:18,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:18,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:18,558 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 14:41:18,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:18,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068690612] [2024-11-13 14:41:18,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068690612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:18,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:18,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:41:18,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755512293] [2024-11-13 14:41:18,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:18,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:41:18,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:18,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:41:18,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:41:18,560 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:18,672 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2024-11-13 14:41:18,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:41:18,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-13 14:41:18,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:18,673 INFO L225 Difference]: With dead ends: 104 [2024-11-13 14:41:18,674 INFO L226 Difference]: Without dead ends: 104 [2024-11-13 14:41:18,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:41:18,675 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 7 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:18,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 205 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:41:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-13 14:41:18,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-13 14:41:18,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 80 states have (on average 1.4875) internal successors, (119), 103 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions. [2024-11-13 14:41:18,680 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 15 [2024-11-13 14:41:18,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:18,680 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions. [2024-11-13 14:41:18,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions. [2024-11-13 14:41:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 14:41:18,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:18,681 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:18,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 14:41:18,682 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:18,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:18,682 INFO L85 PathProgramCache]: Analyzing trace with hash 592333038, now seen corresponding path program 1 times [2024-11-13 14:41:18,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:18,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131286356] [2024-11-13 14:41:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:18,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:19,188 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 14:41:19,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:19,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131286356] [2024-11-13 14:41:19,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131286356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:19,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:19,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:41:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305417741] [2024-11-13 14:41:19,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:19,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:41:19,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:19,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:41:19,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:41:19,190 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:19,508 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2024-11-13 14:41:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:41:19,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-13 14:41:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:19,510 INFO L225 Difference]: With dead ends: 116 [2024-11-13 14:41:19,510 INFO L226 Difference]: Without dead ends: 116 [2024-11-13 14:41:19,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:41:19,511 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 10 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:19,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 443 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:41:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-13 14:41:19,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2024-11-13 14:41:19,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 114 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 14:41:19,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2024-11-13 14:41:19,515 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 17 [2024-11-13 14:41:19,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:19,515 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2024-11-13 14:41:19,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2024-11-13 14:41:19,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:41:19,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:19,516 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:19,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 14:41:19,517 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:19,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1769117139, now seen corresponding path program 1 times [2024-11-13 14:41:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:19,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696093186] [2024-11-13 14:41:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:19,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:19,742 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 14:41:19,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:19,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696093186] [2024-11-13 14:41:19,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696093186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:19,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:19,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 14:41:19,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933702172] [2024-11-13 14:41:19,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:19,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:41:19,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:19,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:41:19,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:41:19,744 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:19,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:19,959 INFO L93 Difference]: Finished difference Result 139 states and 156 transitions. [2024-11-13 14:41:19,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:41:19,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 14:41:19,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:19,961 INFO L225 Difference]: With dead ends: 139 [2024-11-13 14:41:19,961 INFO L226 Difference]: Without dead ends: 139 [2024-11-13 14:41:19,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:41:19,962 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 23 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:19,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 592 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:41:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-13 14:41:19,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2024-11-13 14:41:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 95 states have (on average 1.4105263157894736) internal successors, (134), 118 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 14:41:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2024-11-13 14:41:19,966 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 20 [2024-11-13 14:41:19,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:19,966 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2024-11-13 14:41:19,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2024-11-13 14:41:19,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:41:19,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:19,967 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:19,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 14:41:19,967 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:19,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:19,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1767270097, now seen corresponding path program 1 times [2024-11-13 14:41:19,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:19,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976594486] [2024-11-13 14:41:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:19,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:20,039 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 14:41:20,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:20,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976594486] [2024-11-13 14:41:20,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976594486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:20,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:20,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:41:20,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470141729] [2024-11-13 14:41:20,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:20,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:41:20,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:20,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:41:20,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:41:20,041 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:20,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:20,105 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2024-11-13 14:41:20,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:41:20,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 14:41:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:20,107 INFO L225 Difference]: With dead ends: 130 [2024-11-13 14:41:20,107 INFO L226 Difference]: Without dead ends: 130 [2024-11-13 14:41:20,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 14:41:20,108 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 8 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:20,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 347 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:41:20,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-13 14:41:20,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2024-11-13 14:41:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 100 states have (on average 1.39) internal successors, (139), 123 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 14:41:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 139 transitions. [2024-11-13 14:41:20,113 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 139 transitions. Word has length 20 [2024-11-13 14:41:20,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:20,113 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 139 transitions. [2024-11-13 14:41:20,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:20,113 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 139 transitions. [2024-11-13 14:41:20,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 14:41:20,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:20,114 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] [2024-11-13 14:41:20,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 14:41:20,114 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:20,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:20,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1834289326, now seen corresponding path program 1 times [2024-11-13 14:41:20,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:20,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321323115] [2024-11-13 14:41:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:20,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:20,208 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 14:41:20,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:20,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321323115] [2024-11-13 14:41:20,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321323115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:20,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:20,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:41:20,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564062759] [2024-11-13 14:41:20,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:20,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:41:20,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:20,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:41:20,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:41:20,213 INFO L87 Difference]: Start difference. First operand 124 states and 139 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 14:41:20,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:20,274 INFO L93 Difference]: Finished difference Result 123 states and 137 transitions. [2024-11-13 14:41:20,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:41:20,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-13 14:41:20,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:20,276 INFO L225 Difference]: With dead ends: 123 [2024-11-13 14:41:20,277 INFO L226 Difference]: Without dead ends: 123 [2024-11-13 14:41:20,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:41:20,278 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 70 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:20,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 327 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:41:20,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-13 14:41:20,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-13 14:41:20,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 100 states have (on average 1.37) internal successors, (137), 122 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2024-11-13 14:41:20,289 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 22 [2024-11-13 14:41:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:20,289 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2024-11-13 14:41:20,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 14:41:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2024-11-13 14:41:20,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 14:41:20,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:20,290 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:20,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 14:41:20,290 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:20,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:20,291 INFO L85 PathProgramCache]: Analyzing trace with hash -444198240, now seen corresponding path program 1 times [2024-11-13 14:41:20,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:20,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488366512] [2024-11-13 14:41:20,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:20,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:20,431 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 14:41:20,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:20,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488366512] [2024-11-13 14:41:20,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488366512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:41:20,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:41:20,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:41:20,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455325589] [2024-11-13 14:41:20,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:41:20,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:41:20,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:20,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:41:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:41:20,433 INFO L87 Difference]: Start difference. First operand 123 states and 137 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:20,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:20,673 INFO L93 Difference]: Finished difference Result 138 states and 151 transitions. [2024-11-13 14:41:20,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:41:20,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-13 14:41:20,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:20,675 INFO L225 Difference]: With dead ends: 138 [2024-11-13 14:41:20,675 INFO L226 Difference]: Without dead ends: 118 [2024-11-13 14:41:20,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:41:20,677 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:20,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 354 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:41:20,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-13 14:41:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-13 14:41:20,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.3789473684210527) internal successors, (131), 117 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2024-11-13 14:41:20,683 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 25 [2024-11-13 14:41:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:20,683 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2024-11-13 14:41:20,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2024-11-13 14:41:20,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 14:41:20,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:20,684 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:20,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 14:41:20,684 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:20,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:20,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1817347277, now seen corresponding path program 1 times [2024-11-13 14:41:20,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:20,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335558847] [2024-11-13 14:41:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:20,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:41:21,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:21,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335558847] [2024-11-13 14:41:21,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335558847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:41:21,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172785750] [2024-11-13 14:41:21,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:21,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:41:21,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:41:21,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:41:21,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:41:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:21,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 14:41:21,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:41:21,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:41:21,568 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:41:21,568 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 14:41:21,695 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 11 treesize of output 7 [2024-11-13 14:41:21,756 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:41:21,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-13 14:41:21,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-13 14:41:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:41:21,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:41:21,984 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_440 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_hlist_add_head_~n#1.base| v_ArrVal_440) |c_ULTIMATE.start_create_~head~0#1.base|) |c_ULTIMATE.start_create_~head~0#1.offset|)) 1)) is different from false [2024-11-13 14:41:21,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:41:21,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2024-11-13 14:41:22,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:41:22,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2024-11-13 14:41:22,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-13 14:41:22,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:41:22,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 79 [2024-11-13 14:41:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:41:22,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172785750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:41:22,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:41:22,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-13 14:41:22,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922605119] [2024-11-13 14:41:22,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:41:22,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:41:22,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:22,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:41:22,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=330, Unknown=1, NotChecked=36, Total=420 [2024-11-13 14:41:22,385 INFO L87 Difference]: Start difference. First operand 118 states and 131 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:23,174 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2024-11-13 14:41:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:41:23,174 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-13 14:41:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:23,175 INFO L225 Difference]: With dead ends: 121 [2024-11-13 14:41:23,175 INFO L226 Difference]: Without dead ends: 121 [2024-11-13 14:41:23,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=553, Unknown=1, NotChecked=48, Total=702 [2024-11-13 14:41:23,177 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 23 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:23,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 850 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 666 Invalid, 0 Unknown, 60 Unchecked, 0.6s Time] [2024-11-13 14:41:23,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-13 14:41:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-13 14:41:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 120 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 136 transitions. [2024-11-13 14:41:23,182 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 136 transitions. Word has length 30 [2024-11-13 14:41:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:23,182 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 136 transitions. [2024-11-13 14:41:23,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 136 transitions. [2024-11-13 14:41:23,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 14:41:23,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:23,183 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:23,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:41:23,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 14:41:23,384 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:23,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:23,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1817347276, now seen corresponding path program 1 times [2024-11-13 14:41:23,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:23,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904518634] [2024-11-13 14:41:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:23,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:24,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:41:24,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:24,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904518634] [2024-11-13 14:41:24,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904518634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:41:24,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934502766] [2024-11-13 14:41:24,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:24,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:41:24,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:41:24,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:41:24,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:41:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:24,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-13 14:41:24,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:41:24,499 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 14:41:24,520 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:41:24,520 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 14:41:24,705 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 11 treesize of output 7 [2024-11-13 14:41:24,713 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 11 treesize of output 7 [2024-11-13 14:41:24,792 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:41:24,792 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 56 treesize of output 51 [2024-11-13 14:41:24,807 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 39 treesize of output 24 [2024-11-13 14:41:25,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-13 14:41:25,037 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 26 treesize of output 14 [2024-11-13 14:41:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:41:25,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:41:25,682 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:41:25,682 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 40 treesize of output 44 [2024-11-13 14:41:25,731 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_550 (Array Int Int))) (= |c_ULTIMATE.start_hlist_add_head_~n#1.base| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_hlist_add_head_~n#1.base| v_ArrVal_550) |c_ULTIMATE.start_create_~head~0#1.base|) |c_ULTIMATE.start_create_~head~0#1.offset|))) (forall ((v_ArrVal_549 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_hlist_add_head_~n#1.base| v_ArrVal_549) |c_ULTIMATE.start_create_~head~0#1.base|) |c_ULTIMATE.start_create_~head~0#1.offset|))) (forall ((v_prenex_2 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_hlist_add_head_~n#1.base| v_prenex_2) |c_ULTIMATE.start_create_~head~0#1.base|) |c_ULTIMATE.start_create_~head~0#1.offset|) (+ |c_ULTIMATE.start_hlist_add_head_~n#1.offset| 9)))) is different from false [2024-11-13 14:41:25,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:41:25,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-13 14:41:25,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:41:25,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2024-11-13 14:41:25,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 14:41:25,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:41:25,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-13 14:41:25,799 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:41:25,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-13 14:41:25,816 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 14:41:25,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 1 [2024-11-13 14:41:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:41:26,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934502766] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:41:26,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:41:26,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-13 14:41:26,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944967178] [2024-11-13 14:41:26,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:41:26,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 14:41:26,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:41:26,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 14:41:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=965, Unknown=1, NotChecked=62, Total=1122 [2024-11-13 14:41:26,083 INFO L87 Difference]: Start difference. First operand 121 states and 136 transitions. Second operand has 34 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:27,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:41:27,169 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2024-11-13 14:41:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:41:27,170 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-13 14:41:27,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:41:27,170 INFO L225 Difference]: With dead ends: 115 [2024-11-13 14:41:27,170 INFO L226 Difference]: Without dead ends: 115 [2024-11-13 14:41:27,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=139, Invalid=1346, Unknown=1, NotChecked=74, Total=1560 [2024-11-13 14:41:27,172 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 32 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:41:27,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1155 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 730 Invalid, 0 Unknown, 43 Unchecked, 0.7s Time] [2024-11-13 14:41:27,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-13 14:41:27,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-13 14:41:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 92 states have (on average 1.391304347826087) internal successors, (128), 114 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 14:41:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 128 transitions. [2024-11-13 14:41:27,177 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 128 transitions. Word has length 30 [2024-11-13 14:41:27,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:41:27,177 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 128 transitions. [2024-11-13 14:41:27,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:41:27,178 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 128 transitions. [2024-11-13 14:41:27,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 14:41:27,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:41:27,179 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:41:27,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:41:27,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:41:27,383 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 14:41:27,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:41:27,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2036229856, now seen corresponding path program 1 times [2024-11-13 14:41:27,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:41:27,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783345154] [2024-11-13 14:41:27,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:27,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:41:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:41:28,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:41:28,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783345154] [2024-11-13 14:41:28,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783345154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:41:28,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054890360] [2024-11-13 14:41:28,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:41:28,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:41:28,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:41:28,141 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:41:28,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5df94db-1829-46a4-bc8a-423be31ef147/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:41:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:41:28,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 14:41:28,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:41:28,328 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 14:41:28,343 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:41:28,343 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 14:41:28,486 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 11 treesize of output 7 [2024-11-13 14:41:28,535 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:41:28,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-13 14:41:28,627 INFO L349 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2024-11-13 14:41:28,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-11-13 14:41:28,682 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 34 treesize of output 25 [2024-11-13 14:41:28,747 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 34 treesize of output 25 [2024-11-13 14:41:28,823 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 34 treesize of output 25 [2024-11-13 14:41:28,868 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 34 treesize of output 25 [2024-11-13 14:41:29,008 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 33 treesize of output 17 [2024-11-13 14:41:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:41:29,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:41:29,241 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_726 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_726) |c_ULTIMATE.start_create_~head~0#1.base|) |c_ULTIMATE.start_create_~head~0#1.offset|)) 1)) is different from false [2024-11-13 14:41:33,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:41:33,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-13 14:41:33,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:41:33,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 161 [2024-11-13 14:41:33,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2024-11-13 14:41:33,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2024-11-13 14:42:15,793 WARN L286 SmtUtils]: Spent 40.44s on a formula simplification. DAG size of input: 2179 DAG size of output: 2175 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 14:42:15,795 INFO L349 Elim1Store]: treesize reduction 8, result has 99.8 percent of original size [2024-11-13 14:42:15,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 0 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 528 case distinctions, treesize of input 393 treesize of output 4543