./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-regression/test19.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-regression/test19.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7803e6cc268064256b2f537d6548202260755eda12a32948c0dafd94d7d212db --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:06:50,440 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:06:50,550 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:06:50,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:06:50,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:06:50,600 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:06:50,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:06:50,602 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:06:50,603 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:06:50,603 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:06:50,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:06:50,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:06:50,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:06:50,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:06:50,605 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:06:50,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:06:50,606 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:06:50,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:06:50,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:06:50,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:06:50,607 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:06:50,607 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:06:50,607 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:06:50,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:06:50,607 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:06:50,607 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:06:50,607 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:06:50,608 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:06:50,608 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:06:50,608 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:06:50,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:50,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:50,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:50,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:50,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:06:50,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:50,610 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:50,610 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:50,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:50,610 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:06:50,610 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:06:50,610 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:06:50,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:06:50,611 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:06:50,611 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:06:50,611 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:06:50,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:06:50,611 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_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7803e6cc268064256b2f537d6548202260755eda12a32948c0dafd94d7d212db [2024-11-28 02:06:50,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:06:50,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:06:50,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:06:50,982 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:06:50,982 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:06:50,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/ldv-regression/test19.c [2024-11-28 02:06:53,998 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/data/e9145ac3a/f66b0852084b4947b0be5577b4442a5c/FLAGd9248080c [2024-11-28 02:06:54,216 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:06:54,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/sv-benchmarks/c/ldv-regression/test19.c [2024-11-28 02:06:54,224 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/data/e9145ac3a/f66b0852084b4947b0be5577b4442a5c/FLAGd9248080c [2024-11-28 02:06:54,238 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/data/e9145ac3a/f66b0852084b4947b0be5577b4442a5c [2024-11-28 02:06:54,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:06:54,242 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:06:54,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:54,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:06:54,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:06:54,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e35d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54, skipping insertion in model container [2024-11-28 02:06:54,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,265 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:06:54,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:54,476 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:06:54,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:54,517 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:06:54,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54 WrapperNode [2024-11-28 02:06:54,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:54,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:54,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:06:54,521 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:06:54,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,547 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,571 INFO L138 Inliner]: procedures = 17, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2024-11-28 02:06:54,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:54,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:06:54,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:06:54,575 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:06:54,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,588 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,609 INFO L175 MemorySlicer]: Split 12 memory accesses to 5 slices as follows [2, 3, 2, 2, 3]. 25 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 1, 1, 1, 1]. The 1 writes are split as follows [0, 1, 0, 0, 0]. [2024-11-28 02:06:54,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,609 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,616 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,617 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,619 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,621 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,622 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,624 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:06:54,625 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:06:54,626 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:06:54,626 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:06:54,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:54,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:54,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:06:54,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:06:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:06:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:06:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 02:06:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 02:06:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 02:06:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:06:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:06:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:06:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 02:06:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 02:06:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:06:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:06:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:06:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:06:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:06:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:06:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:06:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:06:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:06:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:06:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:06:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:06:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:06:54,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:06:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:06:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:06:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:06:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:06:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:06:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:06:54,844 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:06:54,846 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:06:55,150 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2024-11-28 02:06:55,150 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:06:55,163 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:06:55,164 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:06:55,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:55 BoogieIcfgContainer [2024-11-28 02:06:55,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:06:55,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:06:55,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:06:55,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:06:55,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:06:54" (1/3) ... [2024-11-28 02:06:55,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ff56c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:55, skipping insertion in model container [2024-11-28 02:06:55,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (2/3) ... [2024-11-28 02:06:55,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ff56c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:55, skipping insertion in model container [2024-11-28 02:06:55,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:55" (3/3) ... [2024-11-28 02:06:55,178 INFO L128 eAbstractionObserver]: Analyzing ICFG test19.c [2024-11-28 02:06:55,198 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:06:55,200 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test19.c that has 1 procedures, 33 locations, 1 initial locations, 0 loop locations, and 14 error locations. [2024-11-28 02:06:55,261 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:06:55,281 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;@5111734f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:06:55,281 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-28 02:06:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:55,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 02:06:55,293 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:55,293 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 02:06:55,294 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:06:55,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:55,302 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2024-11-28 02:06:55,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:55,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142750867] [2024-11-28 02:06:55,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:55,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:55,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:55,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142750867] [2024-11-28 02:06:55,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142750867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:55,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:55,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:06:55,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556094520] [2024-11-28 02:06:55,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:55,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:55,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:55,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:55,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:55,803 INFO L87 Difference]: Start difference. First operand has 33 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 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) [2024-11-28 02:06:55,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:55,885 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2024-11-28 02:06:55,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:06:55,887 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 [2024-11-28 02:06:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:55,895 INFO L225 Difference]: With dead ends: 31 [2024-11-28 02:06:55,896 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 02:06:55,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:55,902 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:55,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:06:55,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 02:06:55,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-28 02:06:55,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.75) internal successors, (28), 28 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2024-11-28 02:06:55,951 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 3 [2024-11-28 02:06:55,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:55,952 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2024-11-28 02:06:55,952 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) [2024-11-28 02:06:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2024-11-28 02:06:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 02:06:55,952 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:55,952 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 02:06:55,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:06:55,953 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:06:55,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:55,954 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-11-28 02:06:55,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:55,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765237817] [2024-11-28 02:06:55,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:55,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:56,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:56,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765237817] [2024-11-28 02:06:56,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765237817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:56,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:56,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:06:56,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54206006] [2024-11-28 02:06:56,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:56,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:56,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:56,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:56,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:56,212 INFO L87 Difference]: Start difference. First operand 29 states and 28 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) [2024-11-28 02:06:56,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:56,247 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2024-11-28 02:06:56,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:06:56,247 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 [2024-11-28 02:06:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:56,249 INFO L225 Difference]: With dead ends: 28 [2024-11-28 02:06:56,250 INFO L226 Difference]: Without dead ends: 28 [2024-11-28 02:06:56,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:56,251 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:56,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:56,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-28 02:06:56,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-28 02:06:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.6875) internal successors, (27), 27 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2024-11-28 02:06:56,258 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 3 [2024-11-28 02:06:56,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:56,258 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2024-11-28 02:06:56,258 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) [2024-11-28 02:06:56,258 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2024-11-28 02:06:56,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-28 02:06:56,259 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:56,259 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:06:56,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:06:56,259 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:06:56,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:56,260 INFO L85 PathProgramCache]: Analyzing trace with hash 28691810, now seen corresponding path program 1 times [2024-11-28 02:06:56,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:56,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899852337] [2024-11-28 02:06:56,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:56,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:56,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:56,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899852337] [2024-11-28 02:06:56,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899852337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:56,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:56,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:06:56,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120816815] [2024-11-28 02:06:56,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:56,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:56,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:56,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:56,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:56,397 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:56,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:56,461 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2024-11-28 02:06:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:06:56,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2024-11-28 02:06:56,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:56,463 INFO L225 Difference]: With dead ends: 27 [2024-11-28 02:06:56,463 INFO L226 Difference]: Without dead ends: 27 [2024-11-28 02:06:56,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:56,466 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:56,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:06:56,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-28 02:06:56,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-28 02:06:56,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.625) internal successors, (26), 26 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2024-11-28 02:06:56,473 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 5 [2024-11-28 02:06:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:56,473 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2024-11-28 02:06:56,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:56,474 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2024-11-28 02:06:56,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-28 02:06:56,474 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:56,474 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:06:56,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:06:56,475 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:06:56,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:56,477 INFO L85 PathProgramCache]: Analyzing trace with hash 28691811, now seen corresponding path program 1 times [2024-11-28 02:06:56,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:56,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025693679] [2024-11-28 02:06:56,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:56,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:56,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:56,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025693679] [2024-11-28 02:06:56,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025693679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:56,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:56,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:06:56,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908764356] [2024-11-28 02:06:56,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:56,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:56,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:56,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:56,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:56,626 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:56,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:56,675 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2024-11-28 02:06:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:06:56,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2024-11-28 02:06:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:56,679 INFO L225 Difference]: With dead ends: 26 [2024-11-28 02:06:56,679 INFO L226 Difference]: Without dead ends: 26 [2024-11-28 02:06:56,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:56,681 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:56,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-28 02:06:56,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-28 02:06:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.5625) internal successors, (25), 25 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) [2024-11-28 02:06:56,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2024-11-28 02:06:56,688 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 5 [2024-11-28 02:06:56,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:56,688 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2024-11-28 02:06:56,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:56,688 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2024-11-28 02:06:56,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:06:56,688 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:56,688 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:56,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:06:56,689 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:06:56,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:56,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1803024995, now seen corresponding path program 1 times [2024-11-28 02:06:56,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:56,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071538210] [2024-11-28 02:06:56,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:56,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:57,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:57,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071538210] [2024-11-28 02:06:57,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071538210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:57,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:57,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:06:57,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112116905] [2024-11-28 02:06:57,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:57,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:06:57,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:57,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:06:57,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:06:57,079 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:57,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:57,179 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2024-11-28 02:06:57,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:06:57,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-11-28 02:06:57,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:57,180 INFO L225 Difference]: With dead ends: 25 [2024-11-28 02:06:57,180 INFO L226 Difference]: Without dead ends: 25 [2024-11-28 02:06:57,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:06:57,181 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:57,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:06:57,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-28 02:06:57,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-28 02:06:57,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.5) internal successors, (24), 24 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2024-11-28 02:06:57,184 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 7 [2024-11-28 02:06:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:57,185 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2024-11-28 02:06:57,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2024-11-28 02:06:57,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:06:57,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:57,185 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:57,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:06:57,187 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:06:57,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:57,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1803024996, now seen corresponding path program 1 times [2024-11-28 02:06:57,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:57,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221573156] [2024-11-28 02:06:57,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:57,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:57,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:57,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221573156] [2024-11-28 02:06:57,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221573156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:57,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:57,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:06:57,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982507040] [2024-11-28 02:06:57,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:57,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:06:57,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:57,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:06:57,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:06:57,543 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:57,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:57,610 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2024-11-28 02:06:57,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:06:57,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-11-28 02:06:57,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:57,612 INFO L225 Difference]: With dead ends: 24 [2024-11-28 02:06:57,612 INFO L226 Difference]: Without dead ends: 24 [2024-11-28 02:06:57,612 INFO L434 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 [2024-11-28 02:06:57,613 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:57,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:06:57,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-28 02:06:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-28 02:06:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 23 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2024-11-28 02:06:57,616 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 7 [2024-11-28 02:06:57,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:57,616 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2024-11-28 02:06:57,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:57,616 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2024-11-28 02:06:57,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 02:06:57,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:57,617 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:57,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:06:57,617 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:06:57,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:57,618 INFO L85 PathProgramCache]: Analyzing trace with hash 59199982, now seen corresponding path program 1 times [2024-11-28 02:06:57,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:57,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112428264] [2024-11-28 02:06:57,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:57,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:58,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:58,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:58,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112428264] [2024-11-28 02:06:58,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112428264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:58,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:58,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:06:58,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300474803] [2024-11-28 02:06:58,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:58,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:06:58,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:58,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:06:58,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:06:58,311 INFO L87 Difference]: Start difference. First operand 24 states and 23 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) [2024-11-28 02:06:58,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:58,385 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2024-11-28 02:06:58,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:06:58,386 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 [2024-11-28 02:06:58,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:58,386 INFO L225 Difference]: With dead ends: 23 [2024-11-28 02:06:58,386 INFO L226 Difference]: Without dead ends: 23 [2024-11-28 02:06:58,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:06:58,387 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:58,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:06:58,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-28 02:06:58,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-28 02:06:58,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 22 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) [2024-11-28 02:06:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2024-11-28 02:06:58,390 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 8 [2024-11-28 02:06:58,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:58,390 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2024-11-28 02:06:58,390 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) [2024-11-28 02:06:58,393 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2024-11-28 02:06:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 02:06:58,393 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:58,393 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:58,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:06:58,394 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:06:58,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:58,396 INFO L85 PathProgramCache]: Analyzing trace with hash 59199981, now seen corresponding path program 1 times [2024-11-28 02:06:58,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:58,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791663872] [2024-11-28 02:06:58,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:58,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:58,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:58,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:58,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791663872] [2024-11-28 02:06:58,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791663872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:58,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:58,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:06:58,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812921696] [2024-11-28 02:06:58,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:58,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:06:58,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:58,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:06:58,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:06:58,717 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 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) [2024-11-28 02:06:58,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:58,801 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2024-11-28 02:06:58,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:06:58,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 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 [2024-11-28 02:06:58,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:58,802 INFO L225 Difference]: With dead ends: 22 [2024-11-28 02:06:58,802 INFO L226 Difference]: Without dead ends: 22 [2024-11-28 02:06:58,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:06:58,803 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:58,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:06:58,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-28 02:06:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-28 02:06:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.3125) internal successors, (21), 21 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2024-11-28 02:06:58,805 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 8 [2024-11-28 02:06:58,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:58,809 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2024-11-28 02:06:58,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 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) [2024-11-28 02:06:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2024-11-28 02:06:58,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 02:06:58,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:58,809 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:58,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:06:58,810 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:06:58,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:58,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1604937529, now seen corresponding path program 1 times [2024-11-28 02:06:58,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:58,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968893059] [2024-11-28 02:06:58,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:58,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:58,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:58,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968893059] [2024-11-28 02:06:58,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968893059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:58,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:58,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:06:58,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103443833] [2024-11-28 02:06:58,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:58,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:06:58,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:58,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:06:58,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:06:58,940 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:59,026 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2024-11-28 02:06:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:06:59,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 02:06:59,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:59,027 INFO L225 Difference]: With dead ends: 21 [2024-11-28 02:06:59,027 INFO L226 Difference]: Without dead ends: 21 [2024-11-28 02:06:59,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:06:59,028 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:59,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 33 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:06:59,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-28 02:06:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-28 02:06:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 20 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) [2024-11-28 02:06:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2024-11-28 02:06:59,034 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 11 [2024-11-28 02:06:59,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:59,034 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2024-11-28 02:06:59,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,034 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2024-11-28 02:06:59,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 02:06:59,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:59,035 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:59,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:06:59,035 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:06:59,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:59,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1604937528, now seen corresponding path program 1 times [2024-11-28 02:06:59,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:59,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745570064] [2024-11-28 02:06:59,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:59,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:59,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:59,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745570064] [2024-11-28 02:06:59,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745570064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:59,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:59,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:06:59,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447214542] [2024-11-28 02:06:59,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:59,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:06:59,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:59,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:06:59,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:06:59,311 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:59,409 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2024-11-28 02:06:59,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:06:59,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 02:06:59,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:59,410 INFO L225 Difference]: With dead ends: 20 [2024-11-28 02:06:59,410 INFO L226 Difference]: Without dead ends: 20 [2024-11-28 02:06:59,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:06:59,411 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:59,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 44 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-28 02:06:59,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-28 02:06:59,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 19 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2024-11-28 02:06:59,414 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 11 [2024-11-28 02:06:59,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:59,414 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2024-11-28 02:06:59,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2024-11-28 02:06:59,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:06:59,415 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:59,415 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:59,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:06:59,415 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:06:59,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:59,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1786544146, now seen corresponding path program 1 times [2024-11-28 02:06:59,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:59,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967700226] [2024-11-28 02:06:59,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:59,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:59,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:59,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967700226] [2024-11-28 02:06:59,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967700226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:59,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:59,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:06:59,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929406552] [2024-11-28 02:06:59,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:59,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:06:59,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:59,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:06:59,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:06:59,538 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:59,610 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2024-11-28 02:06:59,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:06:59,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-28 02:06:59,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:59,611 INFO L225 Difference]: With dead ends: 19 [2024-11-28 02:06:59,611 INFO L226 Difference]: Without dead ends: 19 [2024-11-28 02:06:59,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:06:59,612 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:59,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:59,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-28 02:06:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-28 02:06:59,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2024-11-28 02:06:59,614 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 12 [2024-11-28 02:06:59,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:59,615 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2024-11-28 02:06:59,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,615 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2024-11-28 02:06:59,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:06:59,615 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:59,615 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:59,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:06:59,616 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:06:59,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:59,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1786544147, now seen corresponding path program 1 times [2024-11-28 02:06:59,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:59,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832349293] [2024-11-28 02:06:59,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:59,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:59,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:59,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832349293] [2024-11-28 02:06:59,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832349293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:59,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:59,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:06:59,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670482970] [2024-11-28 02:06:59,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:59,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:06:59,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:59,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:06:59,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:06:59,778 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:59,860 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2024-11-28 02:06:59,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:06:59,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-28 02:06:59,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:59,861 INFO L225 Difference]: With dead ends: 18 [2024-11-28 02:06:59,861 INFO L226 Difference]: Without dead ends: 18 [2024-11-28 02:06:59,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:06:59,862 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:59,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 33 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-28 02:06:59,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-28 02:06:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.0625) internal successors, (17), 17 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) [2024-11-28 02:06:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2024-11-28 02:06:59,864 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 12 [2024-11-28 02:06:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:59,865 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2024-11-28 02:06:59,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2024-11-28 02:06:59,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 02:06:59,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:59,865 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:59,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:06:59,866 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:06:59,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:59,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1117994087, now seen corresponding path program 1 times [2024-11-28 02:06:59,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:59,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032255187] [2024-11-28 02:06:59,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:59,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:00,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:00,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:00,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032255187] [2024-11-28 02:07:00,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032255187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:00,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:00,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:00,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503489103] [2024-11-28 02:07:00,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:00,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:07:00,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:00,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:07:00,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:07:00,259 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:00,295 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2024-11-28 02:07:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:07:00,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 02:07:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:00,296 INFO L225 Difference]: With dead ends: 17 [2024-11-28 02:07:00,296 INFO L226 Difference]: Without dead ends: 16 [2024-11-28 02:07:00,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:07:00,297 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:00,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-28 02:07:00,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-28 02:07:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0) internal successors, (15), 15 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) [2024-11-28 02:07:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2024-11-28 02:07:00,299 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2024-11-28 02:07:00,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:00,299 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2024-11-28 02:07:00,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:00,300 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2024-11-28 02:07:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 02:07:00,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:00,301 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:00,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:07:00,302 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-28 02:07:00,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:00,302 INFO L85 PathProgramCache]: Analyzing trace with hash -298080404, now seen corresponding path program 1 times [2024-11-28 02:07:00,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:00,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391293313] [2024-11-28 02:07:00,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:00,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:00,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:00,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:00,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391293313] [2024-11-28 02:07:00,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391293313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:00,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:00,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:07:00,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531838548] [2024-11-28 02:07:00,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:00,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:07:00,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:00,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:07:00,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:07:00,836 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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) [2024-11-28 02:07:00,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:00,927 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2024-11-28 02:07:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:07:00,928 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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 [2024-11-28 02:07:00,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:00,929 INFO L225 Difference]: With dead ends: 13 [2024-11-28 02:07:00,929 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:07:00,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:07:00,930 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:00,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:00,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:07:00,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:07:00,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:07:00,932 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2024-11-28 02:07:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:00,932 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:07:00,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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) [2024-11-28 02:07:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:07:00,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:07:00,935 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2024-11-28 02:07:00,936 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-11-28 02:07:00,936 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-28 02:07:00,936 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-11-28 02:07:00,936 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2024-11-28 02:07:00,936 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2024-11-28 02:07:00,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-11-28 02:07:00,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2024-11-28 02:07:00,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-11-28 02:07:00,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-11-28 02:07:00,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-11-28 02:07:00,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-28 02:07:00,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (1 of 14 remaining) [2024-11-28 02:07:00,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (0 of 14 remaining) [2024-11-28 02:07:00,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:07:00,941 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:00,944 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:07:00,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:07:00 BoogieIcfgContainer [2024-11-28 02:07:00,949 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:07:00,950 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:07:00,950 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:07:00,950 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:07:00,951 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:55" (3/4) ... [2024-11-28 02:07:00,954 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:07:00,964 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-28 02:07:00,964 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-28 02:07:00,964 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:07:00,964 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:07:01,057 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:07:01,058 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:07:01,058 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:07:01,059 INFO L158 Benchmark]: Toolchain (without parser) took 6817.36ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 91.5MB in the beginning and 86.8MB in the end (delta: 4.7MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2024-11-28 02:07:01,060 INFO L158 Benchmark]: CDTParser took 0.69ms. Allocated memory is still 83.9MB. Free memory is still 39.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:07:01,060 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.90ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 80.9MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:07:01,061 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.64ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 79.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:07:01,062 INFO L158 Benchmark]: Boogie Preprocessor took 50.89ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 77.7MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:07:01,062 INFO L158 Benchmark]: RCFGBuilder took 539.63ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 63.6MB in the end (delta: 14.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:07:01,063 INFO L158 Benchmark]: TraceAbstraction took 5779.51ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 62.9MB in the beginning and 91.3MB in the end (delta: -28.4MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2024-11-28 02:07:01,064 INFO L158 Benchmark]: Witness Printer took 108.09ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 86.8MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:07:01,069 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69ms. Allocated memory is still 83.9MB. Free memory is still 39.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.90ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 80.9MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.64ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 79.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.89ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 77.7MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 539.63ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 63.6MB in the end (delta: 14.1MB). There was no memory consumed. Max. memory is 16.1GB. * TraceAbstraction took 5779.51ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 62.9MB in the beginning and 91.3MB in the end (delta: -28.4MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Witness Printer took 108.09ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 86.8MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 499 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 275 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 529 IncrementalHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 224 mSDtfsCounter, 529 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 1254 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 02:07:01,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1995e0e-a7a1-4299-bc90-fd9cc4efa9c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE