./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 77d101c015aa227688f75df3fd905b74c24dd55f9fd8e8478582e7eae4d24583 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:18:27,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:18:27,608 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-13 15:18:27,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:18:27,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:18:27,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:18:27,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:18:27,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:18:27,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:18:27,658 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:18:27,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:18:27,659 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:18:27,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:18:27,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:18:27,661 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:18:27,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:18:27,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:18:27,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:18:27,661 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:18:27,662 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:18:27,662 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:18:27,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:18:27,663 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:18:27,663 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:18:27,663 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:18:27,663 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:18:27,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:18:27,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:18:27,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:18:27,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:18:27,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:18:27,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:18:27,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:18:27,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:18:27,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:18:27,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:18:27,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:18:27,667 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:18:27,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:18:27,667 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_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77d101c015aa227688f75df3fd905b74c24dd55f9fd8e8478582e7eae4d24583 [2024-11-13 15:18:28,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:18:28,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:18:28,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:18:28,094 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:18:28,095 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:18:28,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i Unable to find full path for "g++" [2024-11-13 15:18:30,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:18:31,112 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:18:31,115 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2024-11-13 15:18:31,145 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/data/a7b19a510/307c69eb57894239bac5c79b1536c32e/FLAG6e30e49c9 [2024-11-13 15:18:31,168 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/data/a7b19a510/307c69eb57894239bac5c79b1536c32e [2024-11-13 15:18:31,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:18:31,174 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:18:31,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:18:31,176 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:18:31,182 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:18:31,183 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:18:31" (1/1) ... [2024-11-13 15:18:31,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0805b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:31, skipping insertion in model container [2024-11-13 15:18:31,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:18:31" (1/1) ... [2024-11-13 15:18:31,238 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:18:32,109 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:18:32,155 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:18:32,160 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:18:32,165 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:18:32,169 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:18:32,178 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:18:32,179 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:18:32,180 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:18:32,182 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:18:32,187 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:18:32,202 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:18:32,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:18:32,269 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:18:32,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:18:32,508 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:18:32,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32 WrapperNode [2024-11-13 15:18:32,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:18:32,514 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:18:32,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:18:32,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:18:32,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32" (1/1) ... [2024-11-13 15:18:32,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32" (1/1) ... [2024-11-13 15:18:32,638 INFO L138 Inliner]: procedures = 346, calls = 463, calls flagged for inlining = 11, calls inlined = 10, statements flattened = 739 [2024-11-13 15:18:32,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:18:32,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:18:32,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:18:32,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:18:32,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32" (1/1) ... [2024-11-13 15:18:32,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32" (1/1) ... [2024-11-13 15:18:32,661 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32" (1/1) ... [2024-11-13 15:18:32,742 INFO L175 MemorySlicer]: Split 412 memory accesses to 14 slices as follows [2, 3, 3, 3, 4, 4, 4, 3, 3, 355, 12, 2, 12, 2]. 86 percent of accesses are in the largest equivalence class. The 379 initializations are split as follows [2, 3, 3, 3, 3, 3, 3, 3, 1, 355, 0, 0, 0, 0]. The 11 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 1, 5, 2]. [2024-11-13 15:18:32,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32" (1/1) ... [2024-11-13 15:18:32,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32" (1/1) ... [2024-11-13 15:18:32,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32" (1/1) ... [2024-11-13 15:18:32,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32" (1/1) ... [2024-11-13 15:18:32,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32" (1/1) ... [2024-11-13 15:18:32,836 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32" (1/1) ... [2024-11-13 15:18:32,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:18:32,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:18:32,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:18:32,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:18:32,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32" (1/1) ... [2024-11-13 15:18:32,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:18:32,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:18:32,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:18:32,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:18:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 15:18:32,945 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 15:18:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:18:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 15:18:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 15:18:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 15:18:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-13 15:18:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-13 15:18:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-13 15:18:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-13 15:18:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-13 15:18:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-13 15:18:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-13 15:18:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-13 15:18:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-13 15:18:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-13 15:18:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:18:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:18:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:18:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 15:18:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 15:18:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 15:18:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-13 15:18:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-13 15:18:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-13 15:18:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-13 15:18:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-13 15:18:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-13 15:18:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-13 15:18:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-13 15:18:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-13 15:18:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:18:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:18:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 15:18:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 15:18:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 15:18:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-13 15:18:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-13 15:18:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-13 15:18:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-13 15:18:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-13 15:18:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-13 15:18:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-13 15:18:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-13 15:18:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-13 15:18:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:18:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:18:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:18:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 15:18:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 15:18:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 15:18:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-13 15:18:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-13 15:18:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-13 15:18:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-13 15:18:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-13 15:18:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-13 15:18:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-13 15:18:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-13 15:18:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-13 15:18:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-13 15:18:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:18:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:18:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 15:18:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 15:18:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 15:18:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-13 15:18:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-13 15:18:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-13 15:18:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-13 15:18:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-13 15:18:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-13 15:18:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-13 15:18:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-13 15:18:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-13 15:18:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:18:32,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:18:33,559 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:18:33,563 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:18:35,011 INFO L? ?]: Removed 262 outVars from TransFormulas that were not future-live. [2024-11-13 15:18:35,011 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:18:35,031 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:18:35,032 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-13 15:18:35,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:18:35 BoogieIcfgContainer [2024-11-13 15:18:35,032 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:18:35,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:18:35,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:18:35,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:18:35,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:18:31" (1/3) ... [2024-11-13 15:18:35,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4d1f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:18:35, skipping insertion in model container [2024-11-13 15:18:35,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:18:32" (2/3) ... [2024-11-13 15:18:35,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4d1f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:18:35, skipping insertion in model container [2024-11-13 15:18:35,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:18:35" (3/3) ... [2024-11-13 15:18:35,044 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-2.i [2024-11-13 15:18:35,064 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:18:35,066 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG basename-2.i that has 2 procedures, 247 locations, 1 initial locations, 7 loop locations, and 96 error locations. [2024-11-13 15:18:35,141 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:18:35,161 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;@624f1cde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:18:35,161 INFO L334 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2024-11-13 15:18:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 247 states, 147 states have (on average 1.945578231292517) internal successors, (286), 243 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:35,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 15:18:35,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:35,175 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 15:18:35,176 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:35,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:35,182 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2024-11-13 15:18:35,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:35,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691559863] [2024-11-13 15:18:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:35,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:18:36,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:36,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691559863] [2024-11-13 15:18:36,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691559863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:36,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:36,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:18:36,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837257652] [2024-11-13 15:18:36,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:36,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:18:36,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:36,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:18:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:18:36,168 INFO L87 Difference]: Start difference. First operand has 247 states, 147 states have (on average 1.945578231292517) internal successors, (286), 243 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:36,578 INFO L93 Difference]: Finished difference Result 257 states and 289 transitions. [2024-11-13 15:18:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:18:36,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-13 15:18:36,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:36,597 INFO L225 Difference]: With dead ends: 257 [2024-11-13 15:18:36,597 INFO L226 Difference]: Without dead ends: 255 [2024-11-13 15:18:36,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:18:36,603 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 240 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:36,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 205 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:18:36,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-13 15:18:36,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 238. [2024-11-13 15:18:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 143 states have (on average 1.8531468531468531) internal successors, (265), 234 states have internal predecessors, (265), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 269 transitions. [2024-11-13 15:18:36,682 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 269 transitions. Word has length 3 [2024-11-13 15:18:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:36,683 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 269 transitions. [2024-11-13 15:18:36,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 269 transitions. [2024-11-13 15:18:36,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 15:18:36,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:36,684 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 15:18:36,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:18:36,685 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:36,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:36,686 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2024-11-13 15:18:36,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:36,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601754893] [2024-11-13 15:18:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:36,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:18:37,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:37,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601754893] [2024-11-13 15:18:37,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601754893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:37,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:37,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:18:37,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121115363] [2024-11-13 15:18:37,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:37,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:18:37,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:37,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:18:37,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:18:37,208 INFO L87 Difference]: Start difference. First operand 238 states and 269 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:37,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:37,535 INFO L93 Difference]: Finished difference Result 237 states and 268 transitions. [2024-11-13 15:18:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:18:37,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-13 15:18:37,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:37,538 INFO L225 Difference]: With dead ends: 237 [2024-11-13 15:18:37,538 INFO L226 Difference]: Without dead ends: 237 [2024-11-13 15:18:37,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:18:37,539 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 11 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:37,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 430 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:18:37,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-13 15:18:37,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2024-11-13 15:18:37,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 143 states have (on average 1.8461538461538463) internal successors, (264), 233 states have internal predecessors, (264), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:37,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 268 transitions. [2024-11-13 15:18:37,562 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 268 transitions. Word has length 3 [2024-11-13 15:18:37,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:37,563 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 268 transitions. [2024-11-13 15:18:37,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:37,563 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 268 transitions. [2024-11-13 15:18:37,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 15:18:37,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:37,564 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 15:18:37,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:18:37,565 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:37,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:37,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2024-11-13 15:18:37,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:37,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107000170] [2024-11-13 15:18:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:37,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:18:38,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:38,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107000170] [2024-11-13 15:18:38,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107000170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:38,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:38,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:18:38,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806424947] [2024-11-13 15:18:38,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:38,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:18:38,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:38,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:18:38,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:18:38,178 INFO L87 Difference]: Start difference. First operand 237 states and 268 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:38,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:38,572 INFO L93 Difference]: Finished difference Result 240 states and 271 transitions. [2024-11-13 15:18:38,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:18:38,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-13 15:18:38,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:38,575 INFO L225 Difference]: With dead ends: 240 [2024-11-13 15:18:38,575 INFO L226 Difference]: Without dead ends: 240 [2024-11-13 15:18:38,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:18:38,577 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 11 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:38,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 599 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:18:38,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-13 15:18:38,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2024-11-13 15:18:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 145 states have (on average 1.8344827586206895) internal successors, (266), 235 states have internal predecessors, (266), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:38,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 270 transitions. [2024-11-13 15:18:38,603 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 270 transitions. Word has length 6 [2024-11-13 15:18:38,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:38,604 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 270 transitions. [2024-11-13 15:18:38,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:38,606 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 270 transitions. [2024-11-13 15:18:38,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:18:38,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:38,607 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:38,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:18:38,607 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:38,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:38,608 INFO L85 PathProgramCache]: Analyzing trace with hash 71429206, now seen corresponding path program 1 times [2024-11-13 15:18:38,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:38,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425635292] [2024-11-13 15:18:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:38,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:18:39,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425635292] [2024-11-13 15:18:39,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425635292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:18:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211215715] [2024-11-13 15:18:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:39,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:18:39,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:18:39,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:18:39,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:18:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:39,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:18:39,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:18:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:18:39,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:18:40,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-13 15:18:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:18:40,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211215715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:18:40,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:18:40,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-13 15:18:40,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452825128] [2024-11-13 15:18:40,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:18:40,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:18:40,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:40,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:18:40,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:18:40,218 INFO L87 Difference]: Start difference. First operand 239 states and 270 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:41,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:41,110 INFO L93 Difference]: Finished difference Result 243 states and 274 transitions. [2024-11-13 15:18:41,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:18:41,111 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 15:18:41,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:41,113 INFO L225 Difference]: With dead ends: 243 [2024-11-13 15:18:41,113 INFO L226 Difference]: Without dead ends: 243 [2024-11-13 15:18:41,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:18:41,117 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 501 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:41,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 1112 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 15:18:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-13 15:18:41,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-11-13 15:18:41,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 150 states have (on average 1.8) internal successors, (270), 239 states have internal predecessors, (270), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 274 transitions. [2024-11-13 15:18:41,147 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 274 transitions. Word has length 9 [2024-11-13 15:18:41,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:41,147 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 274 transitions. [2024-11-13 15:18:41,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:41,147 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 274 transitions. [2024-11-13 15:18:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 15:18:41,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:41,148 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:41,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:18:41,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-13 15:18:41,349 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:41,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:41,350 INFO L85 PathProgramCache]: Analyzing trace with hash 303836291, now seen corresponding path program 1 times [2024-11-13 15:18:41,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:41,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352456491] [2024-11-13 15:18:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:41,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:18:41,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:41,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352456491] [2024-11-13 15:18:41,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352456491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:18:41,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346310755] [2024-11-13 15:18:41,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:41,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:18:41,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:18:41,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:18:41,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:18:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:42,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:18:42,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:18:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:18:42,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:18:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:18:42,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346310755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:18:42,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:18:42,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-13 15:18:42,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625300603] [2024-11-13 15:18:42,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:18:42,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:18:42,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:42,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:18:42,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:18:42,397 INFO L87 Difference]: Start difference. First operand 243 states and 274 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:42,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:42,509 INFO L93 Difference]: Finished difference Result 258 states and 289 transitions. [2024-11-13 15:18:42,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:18:42,511 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-13 15:18:42,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:42,512 INFO L225 Difference]: With dead ends: 258 [2024-11-13 15:18:42,512 INFO L226 Difference]: Without dead ends: 258 [2024-11-13 15:18:42,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:18:42,514 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 4 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:42,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1044 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:18:42,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-13 15:18:42,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2024-11-13 15:18:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 165 states have (on average 1.7272727272727273) internal successors, (285), 254 states have internal predecessors, (285), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:42,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 289 transitions. [2024-11-13 15:18:42,533 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 289 transitions. Word has length 16 [2024-11-13 15:18:42,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:42,534 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 289 transitions. [2024-11-13 15:18:42,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 289 transitions. [2024-11-13 15:18:42,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 15:18:42,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:42,535 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:42,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:18:42,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:18:42,736 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:42,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:42,737 INFO L85 PathProgramCache]: Analyzing trace with hash 754219056, now seen corresponding path program 2 times [2024-11-13 15:18:42,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:42,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536942621] [2024-11-13 15:18:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:42,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:18:43,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:43,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536942621] [2024-11-13 15:18:43,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536942621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:18:43,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461885237] [2024-11-13 15:18:43,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:18:43,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:18:43,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:18:43,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:18:43,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:18:43,948 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:18:43,948 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:18:43,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:18:43,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:18:44,050 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-13 15:18:44,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-13 15:18:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 15:18:44,299 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:18:44,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461885237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:44,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:18:44,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [11] total 12 [2024-11-13 15:18:44,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434425295] [2024-11-13 15:18:44,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:44,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:18:44,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:44,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:18:44,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:18:44,302 INFO L87 Difference]: Start difference. First operand 258 states and 289 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:44,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:44,524 INFO L93 Difference]: Finished difference Result 274 states and 306 transitions. [2024-11-13 15:18:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:18:44,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-13 15:18:44,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:44,527 INFO L225 Difference]: With dead ends: 274 [2024-11-13 15:18:44,527 INFO L226 Difference]: Without dead ends: 274 [2024-11-13 15:18:44,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:18:44,528 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 239 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:44,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 200 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:18:44,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-13 15:18:44,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2024-11-13 15:18:44,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 165 states have (on average 1.7212121212121212) internal successors, (284), 253 states have internal predecessors, (284), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 288 transitions. [2024-11-13 15:18:44,547 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 288 transitions. Word has length 31 [2024-11-13 15:18:44,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:44,547 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 288 transitions. [2024-11-13 15:18:44,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 288 transitions. [2024-11-13 15:18:44,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 15:18:44,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:44,552 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:44,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:18:44,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:18:44,753 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:44,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:44,754 INFO L85 PathProgramCache]: Analyzing trace with hash 754219057, now seen corresponding path program 1 times [2024-11-13 15:18:44,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:44,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202062573] [2024-11-13 15:18:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:18:45,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:45,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202062573] [2024-11-13 15:18:45,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202062573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:18:45,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842095047] [2024-11-13 15:18:45,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:45,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:18:45,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:18:45,320 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:18:45,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:18:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:45,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:18:45,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:18:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:18:45,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:18:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:18:46,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842095047] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:18:46,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:18:46,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-13 15:18:46,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029544342] [2024-11-13 15:18:46,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:18:46,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:18:46,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:46,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:18:46,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:18:46,124 INFO L87 Difference]: Start difference. First operand 257 states and 288 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:46,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:46,241 INFO L93 Difference]: Finished difference Result 263 states and 294 transitions. [2024-11-13 15:18:46,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:18:46,242 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-13 15:18:46,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:46,244 INFO L225 Difference]: With dead ends: 263 [2024-11-13 15:18:46,244 INFO L226 Difference]: Without dead ends: 263 [2024-11-13 15:18:46,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:18:46,245 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 2 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:46,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1040 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:18:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-13 15:18:46,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2024-11-13 15:18:46,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 171 states have (on average 1.695906432748538) internal successors, (290), 259 states have internal predecessors, (290), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:46,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 294 transitions. [2024-11-13 15:18:46,255 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 294 transitions. Word has length 31 [2024-11-13 15:18:46,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:46,256 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 294 transitions. [2024-11-13 15:18:46,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:46,256 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 294 transitions. [2024-11-13 15:18:46,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 15:18:46,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:46,257 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:46,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:18:46,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:18:46,458 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:46,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:46,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1212436655, now seen corresponding path program 2 times [2024-11-13 15:18:46,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:46,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105643861] [2024-11-13 15:18:46,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:46,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:18:47,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:47,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105643861] [2024-11-13 15:18:47,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105643861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:47,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:47,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:18:47,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676455282] [2024-11-13 15:18:47,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:47,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:18:47,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:18:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:18:47,158 INFO L87 Difference]: Start difference. First operand 263 states and 294 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:47,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:47,586 INFO L93 Difference]: Finished difference Result 279 states and 311 transitions. [2024-11-13 15:18:47,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:18:47,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-13 15:18:47,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:47,588 INFO L225 Difference]: With dead ends: 279 [2024-11-13 15:18:47,588 INFO L226 Difference]: Without dead ends: 279 [2024-11-13 15:18:47,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:18:47,590 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 537 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:47,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 150 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:18:47,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-13 15:18:47,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 262. [2024-11-13 15:18:47,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 171 states have (on average 1.6900584795321638) internal successors, (289), 258 states have internal predecessors, (289), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:47,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 293 transitions. [2024-11-13 15:18:47,600 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 293 transitions. Word has length 37 [2024-11-13 15:18:47,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:47,601 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 293 transitions. [2024-11-13 15:18:47,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:18:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 293 transitions. [2024-11-13 15:18:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 15:18:47,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:47,602 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:47,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:18:47,603 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:47,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:47,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1720563734, now seen corresponding path program 1 times [2024-11-13 15:18:47,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:47,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445441126] [2024-11-13 15:18:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:47,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:48,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:18:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:18:48,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:48,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445441126] [2024-11-13 15:18:48,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445441126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:48,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:48,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:18:48,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60851522] [2024-11-13 15:18:48,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:48,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:18:48,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:48,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:18:48,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:18:48,255 INFO L87 Difference]: Start difference. First operand 262 states and 293 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:48,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:48,529 INFO L93 Difference]: Finished difference Result 274 states and 306 transitions. [2024-11-13 15:18:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:18:48,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-13 15:18:48,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:48,532 INFO L225 Difference]: With dead ends: 274 [2024-11-13 15:18:48,532 INFO L226 Difference]: Without dead ends: 274 [2024-11-13 15:18:48,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:18:48,533 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 219 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:48,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 208 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:18:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-13 15:18:48,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2024-11-13 15:18:48,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 171 states have (on average 1.6608187134502923) internal successors, (284), 253 states have internal predecessors, (284), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:48,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 288 transitions. [2024-11-13 15:18:48,555 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 288 transitions. Word has length 45 [2024-11-13 15:18:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:48,560 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 288 transitions. [2024-11-13 15:18:48,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 288 transitions. [2024-11-13 15:18:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 15:18:48,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:48,562 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:48,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:18:48,563 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:48,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:48,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1720563733, now seen corresponding path program 1 times [2024-11-13 15:18:48,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:48,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635362004] [2024-11-13 15:18:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:48,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:49,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:18:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:18:49,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:49,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635362004] [2024-11-13 15:18:49,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635362004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:49,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:49,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:18:49,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307316349] [2024-11-13 15:18:49,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:49,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:18:49,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:49,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:18:49,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:18:49,799 INFO L87 Difference]: Start difference. First operand 257 states and 288 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:50,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:50,380 INFO L93 Difference]: Finished difference Result 418 states and 479 transitions. [2024-11-13 15:18:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:18:50,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-13 15:18:50,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:50,383 INFO L225 Difference]: With dead ends: 418 [2024-11-13 15:18:50,383 INFO L226 Difference]: Without dead ends: 418 [2024-11-13 15:18:50,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:18:50,387 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 408 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:50,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 812 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:18:50,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-13 15:18:50,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 256. [2024-11-13 15:18:50,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 171 states have (on average 1.654970760233918) internal successors, (283), 252 states have internal predecessors, (283), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 287 transitions. [2024-11-13 15:18:50,401 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 287 transitions. Word has length 45 [2024-11-13 15:18:50,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:50,402 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 287 transitions. [2024-11-13 15:18:50,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 287 transitions. [2024-11-13 15:18:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 15:18:50,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:50,408 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:50,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:18:50,408 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:50,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:50,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1174478942, now seen corresponding path program 1 times [2024-11-13 15:18:50,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:50,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181679786] [2024-11-13 15:18:50,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:50,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:51,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:18:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:18:51,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:51,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181679786] [2024-11-13 15:18:51,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181679786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:51,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:51,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:18:51,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837176230] [2024-11-13 15:18:51,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:51,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:18:51,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:51,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:18:51,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:18:51,115 INFO L87 Difference]: Start difference. First operand 256 states and 287 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:51,629 INFO L93 Difference]: Finished difference Result 292 states and 327 transitions. [2024-11-13 15:18:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:18:51,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2024-11-13 15:18:51,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:51,632 INFO L225 Difference]: With dead ends: 292 [2024-11-13 15:18:51,632 INFO L226 Difference]: Without dead ends: 292 [2024-11-13 15:18:51,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:18:51,633 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 500 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:51,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 297 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:18:51,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-13 15:18:51,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 269. [2024-11-13 15:18:51,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 185 states have (on average 1.6432432432432433) internal successors, (304), 265 states have internal predecessors, (304), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 308 transitions. [2024-11-13 15:18:51,644 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 308 transitions. Word has length 48 [2024-11-13 15:18:51,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:51,644 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 308 transitions. [2024-11-13 15:18:51,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 308 transitions. [2024-11-13 15:18:51,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 15:18:51,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:51,646 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:51,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 15:18:51,646 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:51,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:51,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2049109455, now seen corresponding path program 1 times [2024-11-13 15:18:51,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:51,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313690757] [2024-11-13 15:18:51,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:51,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:51,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:18:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:18:52,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:52,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313690757] [2024-11-13 15:18:52,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313690757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:52,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:52,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:18:52,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255731659] [2024-11-13 15:18:52,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:52,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:18:52,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:52,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:18:52,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:18:52,010 INFO L87 Difference]: Start difference. First operand 269 states and 308 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:52,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:52,340 INFO L93 Difference]: Finished difference Result 302 states and 348 transitions. [2024-11-13 15:18:52,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:18:52,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-13 15:18:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:52,342 INFO L225 Difference]: With dead ends: 302 [2024-11-13 15:18:52,343 INFO L226 Difference]: Without dead ends: 302 [2024-11-13 15:18:52,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:18:52,343 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 388 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:52,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 266 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:18:52,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-13 15:18:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 262. [2024-11-13 15:18:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 185 states have (on average 1.6054054054054054) internal successors, (297), 258 states have internal predecessors, (297), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 301 transitions. [2024-11-13 15:18:52,353 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 301 transitions. Word has length 49 [2024-11-13 15:18:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:52,354 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 301 transitions. [2024-11-13 15:18:52,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 301 transitions. [2024-11-13 15:18:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 15:18:52,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:52,356 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:52,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 15:18:52,356 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:52,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:52,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2049109454, now seen corresponding path program 1 times [2024-11-13 15:18:52,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:52,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078249229] [2024-11-13 15:18:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:52,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:52,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:18:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:18:52,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:52,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078249229] [2024-11-13 15:18:52,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078249229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:52,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:52,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:18:52,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264571391] [2024-11-13 15:18:52,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:52,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:18:52,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:52,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:18:52,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:18:52,985 INFO L87 Difference]: Start difference. First operand 262 states and 301 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:53,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:53,138 INFO L93 Difference]: Finished difference Result 268 states and 301 transitions. [2024-11-13 15:18:53,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:18:53,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-13 15:18:53,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:53,141 INFO L225 Difference]: With dead ends: 268 [2024-11-13 15:18:53,141 INFO L226 Difference]: Without dead ends: 268 [2024-11-13 15:18:53,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:18:53,142 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 232 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:53,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 954 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:18:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-13 15:18:53,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 262. [2024-11-13 15:18:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 185 states have (on average 1.6) internal successors, (296), 258 states have internal predecessors, (296), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 300 transitions. [2024-11-13 15:18:53,154 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 300 transitions. Word has length 49 [2024-11-13 15:18:53,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:53,154 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 300 transitions. [2024-11-13 15:18:53,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:53,155 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 300 transitions. [2024-11-13 15:18:53,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 15:18:53,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:53,156 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:53,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 15:18:53,156 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:53,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:53,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2098575816, now seen corresponding path program 1 times [2024-11-13 15:18:53,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:53,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373194477] [2024-11-13 15:18:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:53,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:53,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:18:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:18:53,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:53,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373194477] [2024-11-13 15:18:53,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373194477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:53,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:53,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:18:53,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055980244] [2024-11-13 15:18:53,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:53,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:18:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:18:53,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:18:53,600 INFO L87 Difference]: Start difference. First operand 262 states and 300 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:53,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:53,822 INFO L93 Difference]: Finished difference Result 268 states and 308 transitions. [2024-11-13 15:18:53,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:18:53,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-13 15:18:53,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:53,825 INFO L225 Difference]: With dead ends: 268 [2024-11-13 15:18:53,825 INFO L226 Difference]: Without dead ends: 268 [2024-11-13 15:18:53,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:18:53,826 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 205 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:53,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 204 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:18:53,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-13 15:18:53,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2024-11-13 15:18:53,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 191 states have (on average 1.5916230366492146) internal successors, (304), 263 states have internal predecessors, (304), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 308 transitions. [2024-11-13 15:18:53,840 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 308 transitions. Word has length 51 [2024-11-13 15:18:53,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:53,841 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 308 transitions. [2024-11-13 15:18:53,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:53,841 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 308 transitions. [2024-11-13 15:18:53,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 15:18:53,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:53,842 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:53,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 15:18:53,842 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:53,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:53,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2098575815, now seen corresponding path program 1 times [2024-11-13 15:18:53,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:53,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816571525] [2024-11-13 15:18:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:53,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:55,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:18:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:18:55,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:55,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816571525] [2024-11-13 15:18:55,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816571525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:55,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:55,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:18:55,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431194716] [2024-11-13 15:18:55,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:55,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:18:55,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:55,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:18:55,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:18:55,314 INFO L87 Difference]: Start difference. First operand 267 states and 308 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:56,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:56,327 INFO L93 Difference]: Finished difference Result 272 states and 308 transitions. [2024-11-13 15:18:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:18:56,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-13 15:18:56,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:56,330 INFO L225 Difference]: With dead ends: 272 [2024-11-13 15:18:56,330 INFO L226 Difference]: Without dead ends: 272 [2024-11-13 15:18:56,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:18:56,331 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 31 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:56,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 741 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 15:18:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-13 15:18:56,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 267. [2024-11-13 15:18:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 191 states have (on average 1.5863874345549738) internal successors, (303), 263 states have internal predecessors, (303), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 307 transitions. [2024-11-13 15:18:56,346 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 307 transitions. Word has length 51 [2024-11-13 15:18:56,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:56,346 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 307 transitions. [2024-11-13 15:18:56,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:56,346 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 307 transitions. [2024-11-13 15:18:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 15:18:56,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:56,347 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:56,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 15:18:56,349 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:56,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:56,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1128145048, now seen corresponding path program 1 times [2024-11-13 15:18:56,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:56,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535730996] [2024-11-13 15:18:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:56,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:56,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:18:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:18:56,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:56,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535730996] [2024-11-13 15:18:56,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535730996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:56,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:56,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:18:56,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147127734] [2024-11-13 15:18:56,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:56,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:18:56,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:56,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:18:56,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:18:56,845 INFO L87 Difference]: Start difference. First operand 267 states and 307 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:57,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:57,226 INFO L93 Difference]: Finished difference Result 266 states and 305 transitions. [2024-11-13 15:18:57,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:18:57,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-11-13 15:18:57,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:57,228 INFO L225 Difference]: With dead ends: 266 [2024-11-13 15:18:57,229 INFO L226 Difference]: Without dead ends: 266 [2024-11-13 15:18:57,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:18:57,230 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 13 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:57,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 715 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:18:57,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-13 15:18:57,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-13 15:18:57,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 191 states have (on average 1.5759162303664922) internal successors, (301), 262 states have internal predecessors, (301), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:57,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 305 transitions. [2024-11-13 15:18:57,240 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 305 transitions. Word has length 54 [2024-11-13 15:18:57,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:57,240 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 305 transitions. [2024-11-13 15:18:57,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:57,240 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 305 transitions. [2024-11-13 15:18:57,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 15:18:57,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:57,241 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:57,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 15:18:57,242 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:57,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:57,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1128145047, now seen corresponding path program 1 times [2024-11-13 15:18:57,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:57,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118045431] [2024-11-13 15:18:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:57,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:58,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:18:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:18:58,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:58,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118045431] [2024-11-13 15:18:58,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118045431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:58,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:58,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:18:58,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990750781] [2024-11-13 15:18:58,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:58,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:18:58,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:58,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:18:58,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:18:58,152 INFO L87 Difference]: Start difference. First operand 266 states and 305 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:58,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:58,613 INFO L93 Difference]: Finished difference Result 265 states and 303 transitions. [2024-11-13 15:18:58,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:18:58,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-11-13 15:18:58,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:58,615 INFO L225 Difference]: With dead ends: 265 [2024-11-13 15:18:58,616 INFO L226 Difference]: Without dead ends: 265 [2024-11-13 15:18:58,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:18:58,617 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 12 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:58,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 717 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:18:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-13 15:18:58,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2024-11-13 15:18:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 191 states have (on average 1.5654450261780104) internal successors, (299), 261 states have internal predecessors, (299), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:58,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 303 transitions. [2024-11-13 15:18:58,629 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 303 transitions. Word has length 54 [2024-11-13 15:18:58,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:58,630 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 303 transitions. [2024-11-13 15:18:58,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:58,630 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 303 transitions. [2024-11-13 15:18:58,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 15:18:58,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:58,631 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:58,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 15:18:58,632 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:58,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:58,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1343798220, now seen corresponding path program 1 times [2024-11-13 15:18:58,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:58,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433312774] [2024-11-13 15:18:58,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:58,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:58,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:18:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:18:58,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:58,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433312774] [2024-11-13 15:18:58,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433312774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:58,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:58,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:18:58,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753946842] [2024-11-13 15:18:58,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:58,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:18:58,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:58,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:18:58,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:18:58,874 INFO L87 Difference]: Start difference. First operand 265 states and 303 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:58,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:58,901 INFO L93 Difference]: Finished difference Result 277 states and 318 transitions. [2024-11-13 15:18:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:18:58,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-13 15:18:58,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:58,904 INFO L225 Difference]: With dead ends: 277 [2024-11-13 15:18:58,904 INFO L226 Difference]: Without dead ends: 277 [2024-11-13 15:18:58,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:18:58,905 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 6 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:58,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 484 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:18:58,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-13 15:18:58,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 267. [2024-11-13 15:18:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 193 states have (on average 1.5595854922279793) internal successors, (301), 263 states have internal predecessors, (301), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 305 transitions. [2024-11-13 15:18:58,914 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 305 transitions. Word has length 59 [2024-11-13 15:18:58,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:58,914 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 305 transitions. [2024-11-13 15:18:58,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 305 transitions. [2024-11-13 15:18:58,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 15:18:58,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:58,915 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:58,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 15:18:58,917 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:58,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:58,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1343848190, now seen corresponding path program 1 times [2024-11-13 15:18:58,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:58,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210775395] [2024-11-13 15:18:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:58,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:59,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:18:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:18:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:18:59,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:18:59,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210775395] [2024-11-13 15:18:59,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210775395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:18:59,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:18:59,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:18:59,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895500962] [2024-11-13 15:18:59,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:18:59,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:18:59,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:18:59,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:18:59,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:18:59,236 INFO L87 Difference]: Start difference. First operand 267 states and 305 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:18:59,599 INFO L93 Difference]: Finished difference Result 266 states and 303 transitions. [2024-11-13 15:18:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:18:59,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-13 15:18:59,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:18:59,602 INFO L225 Difference]: With dead ends: 266 [2024-11-13 15:18:59,602 INFO L226 Difference]: Without dead ends: 266 [2024-11-13 15:18:59,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:18:59,603 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 6 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:18:59,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 774 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:18:59,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-13 15:18:59,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-13 15:18:59,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 193 states have (on average 1.549222797927461) internal successors, (299), 262 states have internal predecessors, (299), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:18:59,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 303 transitions. [2024-11-13 15:18:59,613 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 303 transitions. Word has length 59 [2024-11-13 15:18:59,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:18:59,613 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 303 transitions. [2024-11-13 15:18:59,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:18:59,614 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 303 transitions. [2024-11-13 15:18:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 15:18:59,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:18:59,614 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:18:59,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 15:18:59,615 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:18:59,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:18:59,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1343848191, now seen corresponding path program 1 times [2024-11-13 15:18:59,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:18:59,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412339037] [2024-11-13 15:18:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:18:59,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:18:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:00,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:19:00,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:00,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412339037] [2024-11-13 15:19:00,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412339037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:00,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:00,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:19:00,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108221044] [2024-11-13 15:19:00,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:00,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:19:00,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:00,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:19:00,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:19:00,674 INFO L87 Difference]: Start difference. First operand 266 states and 303 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:01,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:01,376 INFO L93 Difference]: Finished difference Result 274 states and 312 transitions. [2024-11-13 15:19:01,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:19:01,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-13 15:19:01,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:01,379 INFO L225 Difference]: With dead ends: 274 [2024-11-13 15:19:01,379 INFO L226 Difference]: Without dead ends: 274 [2024-11-13 15:19:01,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:19:01,380 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 12 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:01,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1016 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:19:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-13 15:19:01,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 272. [2024-11-13 15:19:01,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 199 states have (on average 1.5376884422110553) internal successors, (306), 268 states have internal predecessors, (306), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:19:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 310 transitions. [2024-11-13 15:19:01,391 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 310 transitions. Word has length 59 [2024-11-13 15:19:01,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:01,392 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 310 transitions. [2024-11-13 15:19:01,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:01,392 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 310 transitions. [2024-11-13 15:19:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 15:19:01,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:01,393 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:01,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 15:19:01,393 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:01,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1903894010, now seen corresponding path program 1 times [2024-11-13 15:19:01,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:01,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849959506] [2024-11-13 15:19:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:01,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:01,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:19:01,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:01,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849959506] [2024-11-13 15:19:01,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849959506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750398646] [2024-11-13 15:19:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:01,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:01,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:01,676 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:01,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:19:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:02,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:19:02,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:19:02,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:19:02,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750398646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:02,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:02,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 15:19:02,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451031793] [2024-11-13 15:19:02,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:02,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:19:02,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:02,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:19:02,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:19:02,359 INFO L87 Difference]: Start difference. First operand 272 states and 310 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:02,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:02,404 INFO L93 Difference]: Finished difference Result 299 states and 340 transitions. [2024-11-13 15:19:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:19:02,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2024-11-13 15:19:02,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:02,407 INFO L225 Difference]: With dead ends: 299 [2024-11-13 15:19:02,408 INFO L226 Difference]: Without dead ends: 299 [2024-11-13 15:19:02,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:19:02,409 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 16 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:02,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 724 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:19:02,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-13 15:19:02,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 296. [2024-11-13 15:19:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 223 states have (on average 1.506726457399103) internal successors, (336), 292 states have internal predecessors, (336), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:19:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 340 transitions. [2024-11-13 15:19:02,420 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 340 transitions. Word has length 64 [2024-11-13 15:19:02,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:02,421 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 340 transitions. [2024-11-13 15:19:02,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:02,421 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 340 transitions. [2024-11-13 15:19:02,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 15:19:02,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:02,422 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:02,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:19:02,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:02,623 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:02,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:02,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1903844039, now seen corresponding path program 1 times [2024-11-13 15:19:02,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:02,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226680902] [2024-11-13 15:19:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:02,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:03,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:19:03,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:03,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226680902] [2024-11-13 15:19:03,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226680902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:03,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557595465] [2024-11-13 15:19:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:03,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:03,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:03,770 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:03,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:19:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:04,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 15:19:04,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:04,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:19:04,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-13 15:19:04,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-13 15:19:04,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-13 15:19:04,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2024-11-13 15:19:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:19:04,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:19:05,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557595465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:05,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:05,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2024-11-13 15:19:05,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073294675] [2024-11-13 15:19:05,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:05,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:19:05,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:05,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:19:05,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-13 15:19:05,284 INFO L87 Difference]: Start difference. First operand 296 states and 340 transitions. Second operand has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:06,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:06,841 INFO L93 Difference]: Finished difference Result 295 states and 334 transitions. [2024-11-13 15:19:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:19:06,842 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2024-11-13 15:19:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:06,845 INFO L225 Difference]: With dead ends: 295 [2024-11-13 15:19:06,845 INFO L226 Difference]: Without dead ends: 295 [2024-11-13 15:19:06,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:19:06,848 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 30 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:06,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1965 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 15:19:06,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-13 15:19:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2024-11-13 15:19:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 223 states have (on average 1.4798206278026906) internal successors, (330), 291 states have internal predecessors, (330), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:19:06,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 334 transitions. [2024-11-13 15:19:06,859 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 334 transitions. Word has length 64 [2024-11-13 15:19:06,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:06,859 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 334 transitions. [2024-11-13 15:19:06,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:06,860 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 334 transitions. [2024-11-13 15:19:06,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 15:19:06,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:06,861 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:06,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 15:19:07,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:07,062 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:07,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:07,062 INFO L85 PathProgramCache]: Analyzing trace with hash -494005172, now seen corresponding path program 2 times [2024-11-13 15:19:07,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:07,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315364476] [2024-11-13 15:19:07,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:07,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:07,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:19:07,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:07,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315364476] [2024-11-13 15:19:07,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315364476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:07,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055468166] [2024-11-13 15:19:07,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:19:07,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:07,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:07,499 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:07,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:19:08,246 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:19:08,247 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:19:08,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:19:08,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:19:08,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:19:08,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055468166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:08,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:08,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-13 15:19:08,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730536553] [2024-11-13 15:19:08,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:08,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:19:08,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:19:08,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:19:08,462 INFO L87 Difference]: Start difference. First operand 295 states and 334 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:08,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:08,567 INFO L93 Difference]: Finished difference Result 364 states and 400 transitions. [2024-11-13 15:19:08,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:19:08,569 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2024-11-13 15:19:08,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:08,571 INFO L225 Difference]: With dead ends: 364 [2024-11-13 15:19:08,571 INFO L226 Difference]: Without dead ends: 364 [2024-11-13 15:19:08,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:19:08,572 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 26 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:08,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1217 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:19:08,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-13 15:19:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 355. [2024-11-13 15:19:08,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 283 states have (on average 1.3992932862190812) internal successors, (396), 351 states have internal predecessors, (396), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:19:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 400 transitions. [2024-11-13 15:19:08,585 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 400 transitions. Word has length 79 [2024-11-13 15:19:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:08,585 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 400 transitions. [2024-11-13 15:19:08,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 400 transitions. [2024-11-13 15:19:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-13 15:19:08,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:08,587 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:08,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:19:08,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:08,788 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:08,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:08,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1817591540, now seen corresponding path program 3 times [2024-11-13 15:19:08,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:08,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88995822] [2024-11-13 15:19:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:08,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:09,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:09,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:09,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88995822] [2024-11-13 15:19:09,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88995822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:09,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991512440] [2024-11-13 15:19:09,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:19:09,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:09,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:09,980 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:09,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:19:10,639 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 15:19:10,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:19:10,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:19:10,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:10,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:19:10,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-13 15:19:10,774 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:19:10,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:19:11,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:19:11,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-13 15:19:11,820 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:19:11,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:19:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:11,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:14,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:19:14,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 72 [2024-11-13 15:19:14,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2024-11-13 15:19:14,640 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-13 15:19:14,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-11-13 15:19:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:14,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991512440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:14,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:14,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-13 15:19:14,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245302257] [2024-11-13 15:19:14,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:14,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:19:14,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:14,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:19:14,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:19:14,699 INFO L87 Difference]: Start difference. First operand 355 states and 400 transitions. Second operand has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 20 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:16,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:16,090 INFO L93 Difference]: Finished difference Result 360 states and 396 transitions. [2024-11-13 15:19:16,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:19:16,091 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 20 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2024-11-13 15:19:16,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:16,094 INFO L225 Difference]: With dead ends: 360 [2024-11-13 15:19:16,094 INFO L226 Difference]: Without dead ends: 360 [2024-11-13 15:19:16,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:19:16,095 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 657 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:16,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 929 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 15:19:16,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-13 15:19:16,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 296. [2024-11-13 15:19:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 228 states have (on average 1.4342105263157894) internal successors, (327), 292 states have internal predecessors, (327), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:19:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 331 transitions. [2024-11-13 15:19:16,108 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 331 transitions. Word has length 109 [2024-11-13 15:19:16,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:16,112 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 331 transitions. [2024-11-13 15:19:16,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 20 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:16,113 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 331 transitions. [2024-11-13 15:19:16,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-13 15:19:16,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:16,114 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:16,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:19:16,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 15:19:16,319 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:16,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash -510763512, now seen corresponding path program 1 times [2024-11-13 15:19:16,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:16,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882101740] [2024-11-13 15:19:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:17,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:17,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:17,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882101740] [2024-11-13 15:19:17,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882101740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:17,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177307302] [2024-11-13 15:19:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:17,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:17,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:17,522 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:17,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:19:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:18,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:19:18,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:18,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:19:18,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 15:19:18,357 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:19:18,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:19:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:18,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:19,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2024-11-13 15:19:19,357 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-13 15:19:19,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 49 [2024-11-13 15:19:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:19,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177307302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:19,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:19,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-11-13 15:19:19,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344192873] [2024-11-13 15:19:19,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:19,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:19:19,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:19,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:19:19,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:19:19,419 INFO L87 Difference]: Start difference. First operand 296 states and 331 transitions. Second operand has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:20,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:20,609 INFO L93 Difference]: Finished difference Result 361 states and 395 transitions. [2024-11-13 15:19:20,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:19:20,610 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110 [2024-11-13 15:19:20,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:20,612 INFO L225 Difference]: With dead ends: 361 [2024-11-13 15:19:20,612 INFO L226 Difference]: Without dead ends: 361 [2024-11-13 15:19:20,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:19:20,614 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 1409 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:20,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1409 Valid, 744 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 15:19:20,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-13 15:19:20,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 293. [2024-11-13 15:19:20,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 228 states have (on average 1.4210526315789473) internal successors, (324), 289 states have internal predecessors, (324), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:19:20,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 328 transitions. [2024-11-13 15:19:20,624 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 328 transitions. Word has length 110 [2024-11-13 15:19:20,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:20,625 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 328 transitions. [2024-11-13 15:19:20,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 328 transitions. [2024-11-13 15:19:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 15:19:20,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:20,626 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:20,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:19:20,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 15:19:20,827 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:20,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:20,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1216875377, now seen corresponding path program 1 times [2024-11-13 15:19:20,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:20,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191946872] [2024-11-13 15:19:20,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:20,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:22,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:22,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:22,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191946872] [2024-11-13 15:19:22,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191946872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:22,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620056382] [2024-11-13 15:19:22,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:22,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:22,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:22,975 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:22,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:19:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:23,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 15:19:23,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:23,937 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-11-13 15:19:23,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2024-11-13 15:19:23,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-13 15:19:23,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:19:24,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:19:24,301 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-11-13 15:19:24,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 40 [2024-11-13 15:19:24,319 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:19:24,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:19:25,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:19:25,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2024-11-13 15:19:25,916 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:19:25,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:19:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:26,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:28,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:19:28,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-13 15:19:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:28,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620056382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:28,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:28,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 22 [2024-11-13 15:19:28,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307779912] [2024-11-13 15:19:28,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:28,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 15:19:28,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:28,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 15:19:28,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:19:28,590 INFO L87 Difference]: Start difference. First operand 293 states and 328 transitions. Second operand has 23 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 23 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:19:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:31,441 INFO L93 Difference]: Finished difference Result 476 states and 516 transitions. [2024-11-13 15:19:31,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:19:31,442 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 23 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 112 [2024-11-13 15:19:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:31,444 INFO L225 Difference]: With dead ends: 476 [2024-11-13 15:19:31,444 INFO L226 Difference]: Without dead ends: 476 [2024-11-13 15:19:31,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=242, Invalid=750, Unknown=0, NotChecked=0, Total=992 [2024-11-13 15:19:31,445 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 406 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:31,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1310 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 15:19:31,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-13 15:19:31,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 288. [2024-11-13 15:19:31,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 224 states have (on average 1.4241071428571428) internal successors, (319), 284 states have internal predecessors, (319), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:19:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 323 transitions. [2024-11-13 15:19:31,454 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 323 transitions. Word has length 112 [2024-11-13 15:19:31,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:31,455 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 323 transitions. [2024-11-13 15:19:31,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 23 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:19:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 323 transitions. [2024-11-13 15:19:31,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-13 15:19:31,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:31,456 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:31,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:19:31,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 15:19:31,657 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:31,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:31,658 INFO L85 PathProgramCache]: Analyzing trace with hash 913491886, now seen corresponding path program 1 times [2024-11-13 15:19:31,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:31,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440677538] [2024-11-13 15:19:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:31,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:32,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-13 15:19:32,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:32,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440677538] [2024-11-13 15:19:32,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440677538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:32,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:32,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:19:32,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777802519] [2024-11-13 15:19:32,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:32,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:19:32,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:32,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:19:32,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:19:32,502 INFO L87 Difference]: Start difference. First operand 288 states and 323 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:32,806 INFO L93 Difference]: Finished difference Result 335 states and 381 transitions. [2024-11-13 15:19:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:19:32,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2024-11-13 15:19:32,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:32,809 INFO L225 Difference]: With dead ends: 335 [2024-11-13 15:19:32,809 INFO L226 Difference]: Without dead ends: 335 [2024-11-13 15:19:32,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:19:32,810 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 411 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:32,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 535 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:19:32,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-13 15:19:32,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 291. [2024-11-13 15:19:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 227 states have (on average 1.422907488986784) internal successors, (323), 287 states have internal predecessors, (323), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:19:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 327 transitions. [2024-11-13 15:19:32,822 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 327 transitions. Word has length 113 [2024-11-13 15:19:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:32,822 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 327 transitions. [2024-11-13 15:19:32,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 327 transitions. [2024-11-13 15:19:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-13 15:19:32,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:32,824 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:32,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-13 15:19:32,825 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:32,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1692520315, now seen corresponding path program 1 times [2024-11-13 15:19:32,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:32,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168788514] [2024-11-13 15:19:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:32,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:33,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:33,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:33,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168788514] [2024-11-13 15:19:33,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168788514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:33,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629148606] [2024-11-13 15:19:33,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:33,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:33,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:33,427 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:33,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:19:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:34,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:19:34,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:34,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:34,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-13 15:19:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:34,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629148606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:34,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:34,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-13 15:19:34,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389626879] [2024-11-13 15:19:34,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:34,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:19:34,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:34,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:19:34,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:19:34,943 INFO L87 Difference]: Start difference. First operand 291 states and 327 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:35,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:35,445 INFO L93 Difference]: Finished difference Result 420 states and 469 transitions. [2024-11-13 15:19:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:19:35,445 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2024-11-13 15:19:35,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:35,447 INFO L225 Difference]: With dead ends: 420 [2024-11-13 15:19:35,448 INFO L226 Difference]: Without dead ends: 420 [2024-11-13 15:19:35,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:19:35,448 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 478 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:35,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 835 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:19:35,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-11-13 15:19:35,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 335. [2024-11-13 15:19:35,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 271 states have (on average 1.4538745387453875) internal successors, (394), 330 states have internal predecessors, (394), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:19:35,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 400 transitions. [2024-11-13 15:19:35,459 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 400 transitions. Word has length 115 [2024-11-13 15:19:35,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:35,459 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 400 transitions. [2024-11-13 15:19:35,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:35,459 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 400 transitions. [2024-11-13 15:19:35,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-13 15:19:35,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:35,461 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:35,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:19:35,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 15:19:35,662 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:35,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:35,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1875548507, now seen corresponding path program 1 times [2024-11-13 15:19:35,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:35,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374780539] [2024-11-13 15:19:35,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:35,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:37,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:37,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:37,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374780539] [2024-11-13 15:19:37,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374780539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:37,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46268112] [2024-11-13 15:19:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:37,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:37,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:37,954 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:37,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:19:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:38,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 15:19:38,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:38,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 15:19:38,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 15:19:38,858 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2024-11-13 15:19:38,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 15:19:38,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:19:38,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 15:19:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:39,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:40,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46268112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:40,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:40,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2024-11-13 15:19:40,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408620679] [2024-11-13 15:19:40,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:40,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 15:19:40,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:40,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 15:19:40,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:19:40,515 INFO L87 Difference]: Start difference. First operand 335 states and 400 transitions. Second operand has 22 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 22 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:41,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:41,200 INFO L93 Difference]: Finished difference Result 561 states and 682 transitions. [2024-11-13 15:19:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:19:41,201 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 22 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2024-11-13 15:19:41,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:41,203 INFO L225 Difference]: With dead ends: 561 [2024-11-13 15:19:41,203 INFO L226 Difference]: Without dead ends: 561 [2024-11-13 15:19:41,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:19:41,205 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 365 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:41,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 2948 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:19:41,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-13 15:19:41,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 399. [2024-11-13 15:19:41,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 335 states have (on average 1.373134328358209) internal successors, (460), 394 states have internal predecessors, (460), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:19:41,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 466 transitions. [2024-11-13 15:19:41,217 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 466 transitions. Word has length 116 [2024-11-13 15:19:41,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:41,217 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 466 transitions. [2024-11-13 15:19:41,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 22 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:41,219 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 466 transitions. [2024-11-13 15:19:41,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-13 15:19:41,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:41,220 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:41,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 15:19:41,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 15:19:41,421 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:41,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:41,421 INFO L85 PathProgramCache]: Analyzing trace with hash 928522581, now seen corresponding path program 1 times [2024-11-13 15:19:41,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:41,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181301983] [2024-11-13 15:19:41,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:41,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:42,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:42,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181301983] [2024-11-13 15:19:42,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181301983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499869851] [2024-11-13 15:19:42,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:42,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:42,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:42,527 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:42,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:19:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:43,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:19:43,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:43,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:19:43,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 15:19:43,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-13 15:19:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-13 15:19:43,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:44,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-13 15:19:44,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-13 15:19:44,349 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-13 15:19:44,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499869851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:44,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:44,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 25 [2024-11-13 15:19:44,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80671927] [2024-11-13 15:19:44,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:44,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:19:44,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:44,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:19:44,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:19:44,351 INFO L87 Difference]: Start difference. First operand 399 states and 466 transitions. Second operand has 26 states, 25 states have (on average 3.72) internal successors, (93), 26 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:44,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:44,948 INFO L93 Difference]: Finished difference Result 559 states and 681 transitions. [2024-11-13 15:19:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:19:44,949 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.72) internal successors, (93), 26 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2024-11-13 15:19:44,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:44,951 INFO L225 Difference]: With dead ends: 559 [2024-11-13 15:19:44,951 INFO L226 Difference]: Without dead ends: 559 [2024-11-13 15:19:44,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2024-11-13 15:19:44,953 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 611 mSDsluCounter, 3268 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:44,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 3508 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:19:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-13 15:19:44,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 510. [2024-11-13 15:19:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 444 states have (on average 1.4594594594594594) internal successors, (648), 503 states have internal predecessors, (648), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:19:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 658 transitions. [2024-11-13 15:19:44,969 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 658 transitions. Word has length 116 [2024-11-13 15:19:44,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:44,969 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 658 transitions. [2024-11-13 15:19:44,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.72) internal successors, (93), 26 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:44,970 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 658 transitions. [2024-11-13 15:19:44,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-13 15:19:44,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:44,971 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:45,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:19:45,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:45,172 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:45,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:45,173 INFO L85 PathProgramCache]: Analyzing trace with hash 924146353, now seen corresponding path program 1 times [2024-11-13 15:19:45,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:45,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814612354] [2024-11-13 15:19:45,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:45,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:45,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:45,827 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-13 15:19:45,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:45,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814612354] [2024-11-13 15:19:45,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814612354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:45,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:45,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:19:45,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574286710] [2024-11-13 15:19:45,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:45,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:19:45,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:45,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:19:45,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:19:45,829 INFO L87 Difference]: Start difference. First operand 510 states and 658 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:45,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:45,975 INFO L93 Difference]: Finished difference Result 552 states and 706 transitions. [2024-11-13 15:19:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:19:45,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2024-11-13 15:19:45,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:45,979 INFO L225 Difference]: With dead ends: 552 [2024-11-13 15:19:45,979 INFO L226 Difference]: Without dead ends: 552 [2024-11-13 15:19:45,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:19:45,980 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 41 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:45,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1312 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:19:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-13 15:19:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 508. [2024-11-13 15:19:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 442 states have (on average 1.4434389140271493) internal successors, (638), 501 states have internal predecessors, (638), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:19:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 648 transitions. [2024-11-13 15:19:45,994 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 648 transitions. Word has length 116 [2024-11-13 15:19:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:45,994 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 648 transitions. [2024-11-13 15:19:45,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:45,994 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 648 transitions. [2024-11-13 15:19:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-13 15:19:45,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:45,996 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:45,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-13 15:19:45,996 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr87ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:45,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:45,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1280618328, now seen corresponding path program 1 times [2024-11-13 15:19:45,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:45,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034852856] [2024-11-13 15:19:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:45,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:46,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-13 15:19:46,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:46,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034852856] [2024-11-13 15:19:46,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034852856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:46,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:46,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:19:46,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391582910] [2024-11-13 15:19:46,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:46,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:19:46,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:46,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:19:46,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:19:46,263 INFO L87 Difference]: Start difference. First operand 508 states and 648 transitions. Second operand has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:46,322 INFO L93 Difference]: Finished difference Result 507 states and 646 transitions. [2024-11-13 15:19:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:19:46,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2024-11-13 15:19:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:46,326 INFO L225 Difference]: With dead ends: 507 [2024-11-13 15:19:46,326 INFO L226 Difference]: Without dead ends: 507 [2024-11-13 15:19:46,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:19:46,327 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 174 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:46,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 247 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:19:46,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-13 15:19:46,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2024-11-13 15:19:46,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 442 states have (on average 1.4389140271493213) internal successors, (636), 500 states have internal predecessors, (636), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:19:46,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 646 transitions. [2024-11-13 15:19:46,347 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 646 transitions. Word has length 117 [2024-11-13 15:19:46,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:46,348 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 646 transitions. [2024-11-13 15:19:46,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:46,349 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 646 transitions. [2024-11-13 15:19:46,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-13 15:19:46,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:46,351 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:46,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-13 15:19:46,353 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:46,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:46,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1280570598, now seen corresponding path program 1 times [2024-11-13 15:19:46,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:46,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858432455] [2024-11-13 15:19:46,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:46,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:47,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:47,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:47,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858432455] [2024-11-13 15:19:47,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858432455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:47,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50863800] [2024-11-13 15:19:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:47,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:47,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:47,610 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:47,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:19:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:48,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:19:48,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:48,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:19:48,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:19:48,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:19:48,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:19:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:48,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:48,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-13 15:19:48,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-13 15:19:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:49,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50863800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:49,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:49,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 16 [2024-11-13 15:19:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643833868] [2024-11-13 15:19:49,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:49,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:19:49,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:19:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:19:49,047 INFO L87 Difference]: Start difference. First operand 507 states and 646 transitions. Second operand has 17 states, 16 states have (on average 5.125) internal successors, (82), 17 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:49,484 INFO L93 Difference]: Finished difference Result 549 states and 668 transitions. [2024-11-13 15:19:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:19:49,485 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.125) internal successors, (82), 17 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2024-11-13 15:19:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:49,487 INFO L225 Difference]: With dead ends: 549 [2024-11-13 15:19:49,487 INFO L226 Difference]: Without dead ends: 549 [2024-11-13 15:19:49,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:19:49,488 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 544 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:49,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 2207 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:19:49,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-13 15:19:49,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 508. [2024-11-13 15:19:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 443 states have (on average 1.437923250564334) internal successors, (637), 501 states have internal predecessors, (637), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:19:49,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 647 transitions. [2024-11-13 15:19:49,499 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 647 transitions. Word has length 117 [2024-11-13 15:19:49,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:49,500 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 647 transitions. [2024-11-13 15:19:49,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.125) internal successors, (82), 17 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:49,500 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 647 transitions. [2024-11-13 15:19:49,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-13 15:19:49,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:49,501 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:49,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:19:49,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 15:19:49,702 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr85ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:49,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:49,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1042982409, now seen corresponding path program 1 times [2024-11-13 15:19:49,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:49,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795391131] [2024-11-13 15:19:49,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:49,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:51,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:51,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:51,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795391131] [2024-11-13 15:19:51,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795391131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:51,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374530356] [2024-11-13 15:19:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:51,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:51,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:51,058 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:51,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:19:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:51,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:19:51,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:51,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:19:51,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:19:51,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:19:52,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:19:52,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:19:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:52,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:52,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-13 15:19:52,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-13 15:19:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:52,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374530356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:52,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:52,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 19 [2024-11-13 15:19:52,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597032325] [2024-11-13 15:19:52,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:52,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:19:52,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:52,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:19:52,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:19:52,653 INFO L87 Difference]: Start difference. First operand 508 states and 647 transitions. Second operand has 20 states, 19 states have (on average 4.578947368421052) internal successors, (87), 20 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:53,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:53,489 INFO L93 Difference]: Finished difference Result 538 states and 654 transitions. [2024-11-13 15:19:53,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:19:53,490 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.578947368421052) internal successors, (87), 20 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2024-11-13 15:19:53,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:53,492 INFO L225 Difference]: With dead ends: 538 [2024-11-13 15:19:53,492 INFO L226 Difference]: Without dead ends: 538 [2024-11-13 15:19:53,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:19:53,493 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 531 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:53,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1663 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:19:53,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-13 15:19:53,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 509. [2024-11-13 15:19:53,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 444 states have (on average 1.436936936936937) internal successors, (638), 502 states have internal predecessors, (638), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:19:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 648 transitions. [2024-11-13 15:19:53,506 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 648 transitions. Word has length 118 [2024-11-13 15:19:53,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:53,506 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 648 transitions. [2024-11-13 15:19:53,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.578947368421052) internal successors, (87), 20 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 648 transitions. [2024-11-13 15:19:53,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-13 15:19:53,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:53,508 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:53,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 15:19:53,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 15:19:53,709 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:53,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:53,709 INFO L85 PathProgramCache]: Analyzing trace with hash 525808397, now seen corresponding path program 1 times [2024-11-13 15:19:53,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:53,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792088049] [2024-11-13 15:19:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:53,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:54,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-13 15:19:54,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:54,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792088049] [2024-11-13 15:19:54,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792088049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:54,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:54,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:19:54,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650855599] [2024-11-13 15:19:54,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:54,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:19:54,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:54,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:19:54,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:19:54,021 INFO L87 Difference]: Start difference. First operand 509 states and 648 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:54,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:54,047 INFO L93 Difference]: Finished difference Result 507 states and 639 transitions. [2024-11-13 15:19:54,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:19:54,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2024-11-13 15:19:54,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:54,050 INFO L225 Difference]: With dead ends: 507 [2024-11-13 15:19:54,051 INFO L226 Difference]: Without dead ends: 507 [2024-11-13 15:19:54,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:19:54,052 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 0 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:54,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 691 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:19:54,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-13 15:19:54,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2024-11-13 15:19:54,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 442 states have (on average 1.4230769230769231) internal successors, (629), 500 states have internal predecessors, (629), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:19:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 639 transitions. [2024-11-13 15:19:54,069 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 639 transitions. Word has length 119 [2024-11-13 15:19:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:54,069 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 639 transitions. [2024-11-13 15:19:54,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:54,070 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 639 transitions. [2024-11-13 15:19:54,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-13 15:19:54,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:54,071 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:54,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-13 15:19:54,071 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr90ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:54,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1294352661, now seen corresponding path program 1 times [2024-11-13 15:19:54,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:54,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797554432] [2024-11-13 15:19:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:54,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-13 15:19:54,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:54,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797554432] [2024-11-13 15:19:54,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797554432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:54,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:54,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:19:54,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983535101] [2024-11-13 15:19:54,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:54,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:19:54,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:54,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:19:54,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:19:54,341 INFO L87 Difference]: Start difference. First operand 507 states and 639 transitions. Second operand has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:54,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:54,398 INFO L93 Difference]: Finished difference Result 506 states and 638 transitions. [2024-11-13 15:19:54,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:19:54,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2024-11-13 15:19:54,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:54,402 INFO L225 Difference]: With dead ends: 506 [2024-11-13 15:19:54,402 INFO L226 Difference]: Without dead ends: 506 [2024-11-13 15:19:54,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:19:54,403 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 177 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:54,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 240 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:19:54,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-13 15:19:54,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2024-11-13 15:19:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 442 states have (on average 1.420814479638009) internal successors, (628), 499 states have internal predecessors, (628), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:19:54,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 638 transitions. [2024-11-13 15:19:54,416 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 638 transitions. Word has length 120 [2024-11-13 15:19:54,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:54,417 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 638 transitions. [2024-11-13 15:19:54,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:54,417 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 638 transitions. [2024-11-13 15:19:54,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-13 15:19:54,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:54,418 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:54,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-13 15:19:54,419 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:54,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:54,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1578700486, now seen corresponding path program 1 times [2024-11-13 15:19:54,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:54,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447549277] [2024-11-13 15:19:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:54,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:54,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:54,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:54,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447549277] [2024-11-13 15:19:54,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447549277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:54,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720168035] [2024-11-13 15:19:54,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:54,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:54,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:54,785 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:54,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:19:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:55,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:19:55,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:55,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:55,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720168035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:55,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:55,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 15:19:55,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262408948] [2024-11-13 15:19:55,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:55,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:19:55,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:55,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:19:55,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:19:55,884 INFO L87 Difference]: Start difference. First operand 506 states and 638 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:56,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:56,000 INFO L93 Difference]: Finished difference Result 587 states and 700 transitions. [2024-11-13 15:19:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:19:56,001 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2024-11-13 15:19:56,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:56,003 INFO L225 Difference]: With dead ends: 587 [2024-11-13 15:19:56,004 INFO L226 Difference]: Without dead ends: 587 [2024-11-13 15:19:56,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 235 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:19:56,005 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 98 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:56,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1097 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:19:56,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-11-13 15:19:56,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 507. [2024-11-13 15:19:56,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 443 states have (on average 1.419864559819413) internal successors, (629), 500 states have internal predecessors, (629), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:19:56,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 639 transitions. [2024-11-13 15:19:56,015 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 639 transitions. Word has length 120 [2024-11-13 15:19:56,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:56,016 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 639 transitions. [2024-11-13 15:19:56,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:56,016 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 639 transitions. [2024-11-13 15:19:56,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-13 15:19:56,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:56,018 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:56,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 15:19:56,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 15:19:56,219 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr91ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:56,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1470227308, now seen corresponding path program 1 times [2024-11-13 15:19:56,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:56,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113663880] [2024-11-13 15:19:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:56,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:56,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:56,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113663880] [2024-11-13 15:19:56,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113663880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:19:56,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425591362] [2024-11-13 15:19:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:56,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:19:56,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:19:56,653 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:19:56,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:19:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:57,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:19:57,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:19:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:57,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:19:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:19:57,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425591362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:19:57,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:19:57,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-13 15:19:57,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325097451] [2024-11-13 15:19:57,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:19:57,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:19:57,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:57,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:19:57,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:19:57,745 INFO L87 Difference]: Start difference. First operand 507 states and 639 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:57,839 INFO L93 Difference]: Finished difference Result 509 states and 637 transitions. [2024-11-13 15:19:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:19:57,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2024-11-13 15:19:57,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:57,842 INFO L225 Difference]: With dead ends: 509 [2024-11-13 15:19:57,842 INFO L226 Difference]: Without dead ends: 509 [2024-11-13 15:19:57,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 239 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:19:57,843 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 220 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:57,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 896 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:19:57,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-11-13 15:19:57,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 503. [2024-11-13 15:19:57,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 439 states have (on average 1.4145785876993167) internal successors, (621), 496 states have internal predecessors, (621), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:19:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 631 transitions. [2024-11-13 15:19:57,852 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 631 transitions. Word has length 121 [2024-11-13 15:19:57,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:57,852 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 631 transitions. [2024-11-13 15:19:57,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:57,853 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 631 transitions. [2024-11-13 15:19:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-13 15:19:57,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:57,854 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:57,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 15:19:58,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 15:19:58,055 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:58,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:58,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1503527188, now seen corresponding path program 1 times [2024-11-13 15:19:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:58,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328991313] [2024-11-13 15:19:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:58,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:58,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-13 15:19:58,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:58,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328991313] [2024-11-13 15:19:58,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328991313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:58,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:58,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:19:58,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615721496] [2024-11-13 15:19:58,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:58,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:19:58,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:58,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:19:58,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:19:58,257 INFO L87 Difference]: Start difference. First operand 503 states and 631 transitions. Second operand has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:58,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:58,401 INFO L93 Difference]: Finished difference Result 502 states and 629 transitions. [2024-11-13 15:19:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:19:58,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2024-11-13 15:19:58,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:58,403 INFO L225 Difference]: With dead ends: 502 [2024-11-13 15:19:58,404 INFO L226 Difference]: Without dead ends: 502 [2024-11-13 15:19:58,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:19:58,404 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 1 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:19:58,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 386 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:19:58,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-11-13 15:19:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2024-11-13 15:19:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 439 states have (on average 1.4100227790432802) internal successors, (619), 495 states have internal predecessors, (619), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:19:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 629 transitions. [2024-11-13 15:19:58,413 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 629 transitions. Word has length 121 [2024-11-13 15:19:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:58,414 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 629 transitions. [2024-11-13 15:19:58,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 629 transitions. [2024-11-13 15:19:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-13 15:19:58,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:58,415 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:58,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-13 15:19:58,416 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:58,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:58,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1503527187, now seen corresponding path program 1 times [2024-11-13 15:19:58,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:58,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743919585] [2024-11-13 15:19:58,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:58,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:58,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:19:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:19:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-13 15:19:58,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:19:58,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743919585] [2024-11-13 15:19:58,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743919585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:19:58,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:19:58,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:19:58,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5300990] [2024-11-13 15:19:58,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:19:58,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:19:58,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:19:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:19:58,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:19:58,755 INFO L87 Difference]: Start difference. First operand 502 states and 629 transitions. Second operand has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:58,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:19:58,892 INFO L93 Difference]: Finished difference Result 501 states and 627 transitions. [2024-11-13 15:19:58,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:19:58,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2024-11-13 15:19:58,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:19:58,895 INFO L225 Difference]: With dead ends: 501 [2024-11-13 15:19:58,895 INFO L226 Difference]: Without dead ends: 501 [2024-11-13 15:19:58,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:19:58,895 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 0 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 391 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 [2024-11-13 15:19:58,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 391 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:19:58,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2024-11-13 15:19:58,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 501. [2024-11-13 15:19:58,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 439 states have (on average 1.4054669703872438) internal successors, (617), 494 states have internal predecessors, (617), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:19:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 627 transitions. [2024-11-13 15:19:58,904 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 627 transitions. Word has length 121 [2024-11-13 15:19:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:19:58,905 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 627 transitions. [2024-11-13 15:19:58,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:19:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 627 transitions. [2024-11-13 15:19:58,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-13 15:19:58,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:19:58,906 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:19:58,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-13 15:19:58,906 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr88ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:19:58,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:19:58,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1175368589, now seen corresponding path program 1 times [2024-11-13 15:19:58,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:19:58,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78630218] [2024-11-13 15:19:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:19:58,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:19:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:00,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:20:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:20:00,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:20:00,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78630218] [2024-11-13 15:20:00,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78630218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:20:00,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375133673] [2024-11-13 15:20:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:00,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:20:00,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:20:00,665 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:20:00,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:20:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:01,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 15:20:01,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:20:01,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:20:01,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-13 15:20:01,540 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:20:01,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:20:01,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:20:01,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 15:20:01,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:20:02,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 15:20:02,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:20:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:20:02,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:20:02,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-13 15:20:02,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-13 15:20:02,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-13 15:20:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:20:02,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375133673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:20:02,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:20:02,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 19 [2024-11-13 15:20:02,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470236351] [2024-11-13 15:20:02,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:20:02,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:20:02,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:20:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:20:02,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:20:02,640 INFO L87 Difference]: Start difference. First operand 501 states and 627 transitions. Second operand has 20 states, 19 states have (on average 5.0) internal successors, (95), 20 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:03,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:20:03,393 INFO L93 Difference]: Finished difference Result 532 states and 641 transitions. [2024-11-13 15:20:03,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:20:03,394 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.0) internal successors, (95), 20 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2024-11-13 15:20:03,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:20:03,396 INFO L225 Difference]: With dead ends: 532 [2024-11-13 15:20:03,396 INFO L226 Difference]: Without dead ends: 532 [2024-11-13 15:20:03,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-11-13 15:20:03,397 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 633 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:20:03,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1625 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:20:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2024-11-13 15:20:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 505. [2024-11-13 15:20:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 443 states have (on average 1.4018058690744921) internal successors, (621), 498 states have internal predecessors, (621), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:20:03,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 631 transitions. [2024-11-13 15:20:03,410 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 631 transitions. Word has length 123 [2024-11-13 15:20:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:20:03,410 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 631 transitions. [2024-11-13 15:20:03,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.0) internal successors, (95), 20 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 631 transitions. [2024-11-13 15:20:03,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-13 15:20:03,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:20:03,412 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:20:03,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 15:20:03,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:20:03,616 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:20:03,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:20:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash 634005654, now seen corresponding path program 1 times [2024-11-13 15:20:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:20:03,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9800054] [2024-11-13 15:20:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:03,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:20:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:03,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:20:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-13 15:20:03,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:20:03,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9800054] [2024-11-13 15:20:03,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9800054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:20:03,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:20:03,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:20:03,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923844712] [2024-11-13 15:20:03,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:20:03,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:20:03,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:20:03,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:20:03,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:20:03,858 INFO L87 Difference]: Start difference. First operand 505 states and 631 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:03,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:20:03,887 INFO L93 Difference]: Finished difference Result 503 states and 623 transitions. [2024-11-13 15:20:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:20:03,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124 [2024-11-13 15:20:03,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:20:03,889 INFO L225 Difference]: With dead ends: 503 [2024-11-13 15:20:03,889 INFO L226 Difference]: Without dead ends: 503 [2024-11-13 15:20:03,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:20:03,889 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 2 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:20:03,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 677 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:20:03,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-13 15:20:03,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 497. [2024-11-13 15:20:03,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 435 states have (on average 1.3908045977011494) internal successors, (605), 490 states have internal predecessors, (605), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:20:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 615 transitions. [2024-11-13 15:20:03,899 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 615 transitions. Word has length 124 [2024-11-13 15:20:03,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:20:03,900 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 615 transitions. [2024-11-13 15:20:03,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:03,900 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 615 transitions. [2024-11-13 15:20:03,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-13 15:20:03,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:20:03,901 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:20:03,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-13 15:20:03,902 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:20:03,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:20:03,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1767248590, now seen corresponding path program 1 times [2024-11-13 15:20:03,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:20:03,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648376858] [2024-11-13 15:20:03,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:03,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:20:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:04,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:20:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-13 15:20:04,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:20:04,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648376858] [2024-11-13 15:20:04,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648376858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:20:04,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:20:04,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:20:04,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799947006] [2024-11-13 15:20:04,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:20:04,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:20:04,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:20:04,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:20:04,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:20:04,262 INFO L87 Difference]: Start difference. First operand 497 states and 615 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:04,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:20:04,416 INFO L93 Difference]: Finished difference Result 515 states and 636 transitions. [2024-11-13 15:20:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:20:04,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2024-11-13 15:20:04,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:20:04,420 INFO L225 Difference]: With dead ends: 515 [2024-11-13 15:20:04,420 INFO L226 Difference]: Without dead ends: 515 [2024-11-13 15:20:04,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:20:04,421 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 15 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:20:04,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1481 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:20:04,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-13 15:20:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 504. [2024-11-13 15:20:04,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 442 states have (on average 1.3823529411764706) internal successors, (611), 497 states have internal predecessors, (611), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:20:04,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 621 transitions. [2024-11-13 15:20:04,430 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 621 transitions. Word has length 125 [2024-11-13 15:20:04,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:20:04,430 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 621 transitions. [2024-11-13 15:20:04,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:04,430 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 621 transitions. [2024-11-13 15:20:04,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 15:20:04,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:20:04,431 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:20:04,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-13 15:20:04,432 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr91ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:20:04,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:20:04,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1463203116, now seen corresponding path program 1 times [2024-11-13 15:20:04,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:20:04,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993552722] [2024-11-13 15:20:04,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:04,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:20:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:07,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:20:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:20:07,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:20:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993552722] [2024-11-13 15:20:07,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993552722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:20:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750554484] [2024-11-13 15:20:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:07,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:20:07,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:20:07,157 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:20:07,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:20:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:07,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 15:20:07,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:20:07,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-13 15:20:08,052 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:20:08,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:20:08,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:20:08,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 15:20:08,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:20:08,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 15:20:08,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:20:08,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:20:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:20:08,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:20:09,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-13 15:20:09,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-13 15:20:09,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-13 15:20:10,117 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 15:20:10,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-13 15:20:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:20:10,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750554484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:20:10,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:20:10,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 31 [2024-11-13 15:20:10,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580603418] [2024-11-13 15:20:10,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:20:10,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 15:20:10,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:20:10,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 15:20:10,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=780, Unknown=0, NotChecked=0, Total=992 [2024-11-13 15:20:10,153 INFO L87 Difference]: Start difference. First operand 504 states and 621 transitions. Second operand has 32 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 32 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:11,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:20:11,655 INFO L93 Difference]: Finished difference Result 533 states and 634 transitions. [2024-11-13 15:20:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:20:11,656 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 32 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2024-11-13 15:20:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:20:11,657 INFO L225 Difference]: With dead ends: 533 [2024-11-13 15:20:11,658 INFO L226 Difference]: Without dead ends: 533 [2024-11-13 15:20:11,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 235 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=402, Invalid=1404, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 15:20:11,658 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 1564 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:20:11,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 1827 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 15:20:11,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-13 15:20:11,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 507. [2024-11-13 15:20:11,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 445 states have (on average 1.3797752808988764) internal successors, (614), 500 states have internal predecessors, (614), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:20:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 624 transitions. [2024-11-13 15:20:11,665 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 624 transitions. Word has length 126 [2024-11-13 15:20:11,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:20:11,665 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 624 transitions. [2024-11-13 15:20:11,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 32 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 624 transitions. [2024-11-13 15:20:11,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 15:20:11,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:20:11,666 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:20:11,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 15:20:11,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:20:11,867 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:20:11,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:20:11,867 INFO L85 PathProgramCache]: Analyzing trace with hash -607388585, now seen corresponding path program 1 times [2024-11-13 15:20:11,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:20:11,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90170404] [2024-11-13 15:20:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:11,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:20:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:12,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:20:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:20:12,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:20:12,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90170404] [2024-11-13 15:20:12,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90170404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:20:12,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095578323] [2024-11-13 15:20:12,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:12,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:20:12,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:20:12,394 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:20:12,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:20:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:13,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:20:13,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:20:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:20:13,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:20:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:20:13,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095578323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:20:13,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:20:13,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-13 15:20:13,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663666573] [2024-11-13 15:20:13,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:20:13,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:20:13,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:20:13,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:20:13,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:20:13,775 INFO L87 Difference]: Start difference. First operand 507 states and 624 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:20:13,902 INFO L93 Difference]: Finished difference Result 477 states and 541 transitions. [2024-11-13 15:20:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:20:13,903 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2024-11-13 15:20:13,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:20:13,904 INFO L225 Difference]: With dead ends: 477 [2024-11-13 15:20:13,904 INFO L226 Difference]: Without dead ends: 477 [2024-11-13 15:20:13,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:20:13,904 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 64 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:20:13,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1552 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:20:13,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-13 15:20:13,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 417. [2024-11-13 15:20:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 357 states have (on average 1.3277310924369747) internal successors, (474), 412 states have internal predecessors, (474), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:20:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 480 transitions. [2024-11-13 15:20:13,908 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 480 transitions. Word has length 126 [2024-11-13 15:20:13,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:20:13,908 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 480 transitions. [2024-11-13 15:20:13,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:13,909 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 480 transitions. [2024-11-13 15:20:13,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-13 15:20:13,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:20:13,909 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:20:13,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:20:14,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-13 15:20:14,110 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr92ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:20:14,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:20:14,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1885343177, now seen corresponding path program 1 times [2024-11-13 15:20:14,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:20:14,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241605140] [2024-11-13 15:20:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:14,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:20:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:14,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:20:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-13 15:20:14,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:20:14,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241605140] [2024-11-13 15:20:14,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241605140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:20:14,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:20:14,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:20:14,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216749979] [2024-11-13 15:20:14,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:20:14,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:20:14,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:20:14,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:20:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:20:14,276 INFO L87 Difference]: Start difference. First operand 417 states and 480 transitions. Second operand has 3 states, 2 states have (on average 26.5) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:14,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:20:14,289 INFO L93 Difference]: Finished difference Result 416 states and 479 transitions. [2024-11-13 15:20:14,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:20:14,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2024-11-13 15:20:14,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:20:14,291 INFO L225 Difference]: With dead ends: 416 [2024-11-13 15:20:14,291 INFO L226 Difference]: Without dead ends: 416 [2024-11-13 15:20:14,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:20:14,292 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 170 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:20:14,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 239 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:20:14,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-13 15:20:14,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2024-11-13 15:20:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 357 states have (on average 1.3249299719887955) internal successors, (473), 411 states have internal predecessors, (473), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:20:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 479 transitions. [2024-11-13 15:20:14,298 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 479 transitions. Word has length 127 [2024-11-13 15:20:14,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:20:14,298 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 479 transitions. [2024-11-13 15:20:14,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 479 transitions. [2024-11-13 15:20:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-13 15:20:14,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:20:14,299 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:20:14,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-13 15:20:14,299 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr93ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:20:14,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:20:14,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1683904142, now seen corresponding path program 1 times [2024-11-13 15:20:14,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:20:14,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129689795] [2024-11-13 15:20:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:14,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:20:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:14,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:20:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-13 15:20:14,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:20:14,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129689795] [2024-11-13 15:20:14,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129689795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:20:14,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:20:14,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:20:14,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615046731] [2024-11-13 15:20:14,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:20:14,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:20:14,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:20:14,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:20:14,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:20:14,559 INFO L87 Difference]: Start difference. First operand 416 states and 479 transitions. Second operand has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:14,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:20:14,595 INFO L93 Difference]: Finished difference Result 415 states and 478 transitions. [2024-11-13 15:20:14,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:20:14,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2024-11-13 15:20:14,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:20:14,597 INFO L225 Difference]: With dead ends: 415 [2024-11-13 15:20:14,597 INFO L226 Difference]: Without dead ends: 415 [2024-11-13 15:20:14,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:20:14,598 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 171 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:20:14,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 222 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:20:14,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-13 15:20:14,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2024-11-13 15:20:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 357 states have (on average 1.3221288515406162) internal successors, (472), 410 states have internal predecessors, (472), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:20:14,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 478 transitions. [2024-11-13 15:20:14,602 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 478 transitions. Word has length 128 [2024-11-13 15:20:14,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:20:14,602 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 478 transitions. [2024-11-13 15:20:14,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:20:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 478 transitions. [2024-11-13 15:20:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-13 15:20:14,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:20:14,603 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:20:14,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-13 15:20:14,603 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr94ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:20:14,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:20:14,604 INFO L85 PathProgramCache]: Analyzing trace with hash 661421337, now seen corresponding path program 1 times [2024-11-13 15:20:14,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:20:14,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093886291] [2024-11-13 15:20:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:14,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:20:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:16,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:20:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:20:16,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:20:16,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093886291] [2024-11-13 15:20:16,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093886291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:20:16,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019225067] [2024-11-13 15:20:16,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:16,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:20:16,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:20:16,871 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:20:16,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:20:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:17,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 1587 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 15:20:17,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:20:17,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:20:17,794 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2024-11-13 15:20:17,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 15:20:17,916 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2024-11-13 15:20:17,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2024-11-13 15:20:17,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:20:18,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-13 15:20:18,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:20:19,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-13 15:20:19,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-13 15:20:19,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-13 15:20:19,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2024-11-13 15:20:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:20:19,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:20:20,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-13 15:20:20,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2024-11-13 15:20:21,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019225067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:20:21,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:20:21,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-13 15:20:21,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5239550] [2024-11-13 15:20:21,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:20:21,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 15:20:21,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:20:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 15:20:21,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 15:20:21,280 INFO L87 Difference]: Start difference. First operand 415 states and 478 transitions. Second operand has 25 states, 24 states have (on average 4.0) internal successors, (96), 25 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:20:22,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:20:22,045 INFO L93 Difference]: Finished difference Result 438 states and 501 transitions. [2024-11-13 15:20:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:20:22,045 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.0) internal successors, (96), 25 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 129 [2024-11-13 15:20:22,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:20:22,046 INFO L225 Difference]: With dead ends: 438 [2024-11-13 15:20:22,046 INFO L226 Difference]: Without dead ends: 438 [2024-11-13 15:20:22,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 197 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=375, Invalid=957, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 15:20:22,047 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 994 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:20:22,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1150 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:20:22,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-13 15:20:22,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 418. [2024-11-13 15:20:22,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 360 states have (on average 1.3194444444444444) internal successors, (475), 413 states have internal predecessors, (475), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:20:22,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 481 transitions. [2024-11-13 15:20:22,056 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 481 transitions. Word has length 129 [2024-11-13 15:20:22,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:20:22,057 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 481 transitions. [2024-11-13 15:20:22,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.0) internal successors, (96), 25 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:20:22,057 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 481 transitions. [2024-11-13 15:20:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-13 15:20:22,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:20:22,058 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:20:22,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 15:20:22,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-13 15:20:22,258 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr95ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:20:22,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:20:22,259 INFO L85 PathProgramCache]: Analyzing trace with hash -970774543, now seen corresponding path program 1 times [2024-11-13 15:20:22,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:20:22,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583457490] [2024-11-13 15:20:22,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:22,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:20:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:26,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:20:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:20:26,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:20:26,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583457490] [2024-11-13 15:20:26,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583457490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:20:26,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408072730] [2024-11-13 15:20:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:20:26,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:20:26,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:20:26,838 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:20:26,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 15:20:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:20:27,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 15:20:27,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:20:28,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2024-11-13 15:20:29,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:20:30,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 547 treesize of output 435 [2024-11-13 15:20:31,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:20:44,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 547 treesize of output 435 [2024-11-13 15:21:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:21:42,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:21:46,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2024-11-13 15:21:46,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2024-11-13 15:22:00,640 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$#10.base| |c_ULTIMATE.start_main_~argv~0#1.base|)) (.cse3 (= |c_ULTIMATE.start_main_~i~3#1| 0))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_main_~a~0#1.base|) 0) (forall ((v_antiDerIndex_entry0_1 Int)) (or (forall ((v_arrayElimCell_90 Int)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store (store (store |c_#valid| v_arrayElimCell_90 0) |c_ULTIMATE.start_main_~mem_track~0#1.base| 0) |c_ULTIMATE.start_main_~argv~0#1.base| 0) v_antiDerIndex_entry0_1))) (let ((.cse0 (store (store (store |c_#valid| (select .cse1 (+ (* |c_ULTIMATE.start_main_~i~3#1| 8) |c_ULTIMATE.start_main_~argv~0#1.offset|)) 0) |c_ULTIMATE.start_main_~mem_track~0#1.base| 0) |c_ULTIMATE.start_main_~argv~0#1.base| 0))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_main_~a~0#1.base| (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|)) v_antiDerIndex_entry0_1) (select .cse0 v_antiDerIndex_entry0_1))))) (or (forall ((v_antiDerIndex_entry0_1 Int)) (let ((.cse2 (store (store (store |c_#valid| (select .cse1 |c_ULTIMATE.start_main_~argv~0#1.offset|) 0) |c_ULTIMATE.start_main_~mem_track~0#1.base| 0) |c_ULTIMATE.start_main_~argv~0#1.base| 0))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_main_~a~0#1.base| (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|)) v_antiDerIndex_entry0_1) (select .cse2 v_antiDerIndex_entry0_1)))) (not .cse3)) (or (forall ((v_arrayElimCell_90 Int) (v_antiDerIndex_entry0_1 Int)) (let ((.cse4 (store (store (store |c_#valid| v_arrayElimCell_90 0) |c_ULTIMATE.start_main_~mem_track~0#1.base| 0) |c_ULTIMATE.start_main_~argv~0#1.base| 0))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_main_~a~0#1.base| (select .cse4 |c_ULTIMATE.start_main_~a~0#1.base|)) v_antiDerIndex_entry0_1) (select .cse4 v_antiDerIndex_entry0_1)))) .cse3))) is different from false [2024-11-13 15:22:04,795 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (store (store (store |c_#valid| |c_ULTIMATE.start_main_#t~malloc112#1.base| 0) |c_ULTIMATE.start_main_~mem_track~0#1.base| 0) |c_ULTIMATE.start_main_~argv~0#1.base| 0))) (let ((.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_main_~a~0#1.base| (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|))) (.cse2 (= |c_ULTIMATE.start_main_~i~3#1| 0))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_main_~a~0#1.base|) 0) (forall ((v_antiDerIndex_entry0_1 Int)) (or (forall ((v_arrayElimCell_90 Int)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store (store (store |c_#valid| v_arrayElimCell_90 0) |c_ULTIMATE.start_main_~mem_track~0#1.base| 0) |c_ULTIMATE.start_main_~argv~0#1.base| 0) v_antiDerIndex_entry0_1))) (= (select .cse0 v_antiDerIndex_entry0_1) (select .cse1 v_antiDerIndex_entry0_1)))) (or (forall ((v_antiDerIndex_entry0_1 Int)) (= (select .cse0 v_antiDerIndex_entry0_1) (select .cse1 v_antiDerIndex_entry0_1))) (not .cse2)) (or (forall ((v_arrayElimCell_90 Int) (v_antiDerIndex_entry0_1 Int)) (let ((.cse3 (store (store (store |c_#valid| v_arrayElimCell_90 0) |c_ULTIMATE.start_main_~mem_track~0#1.base| 0) |c_ULTIMATE.start_main_~argv~0#1.base| 0))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_main_~a~0#1.base| (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|)) v_antiDerIndex_entry0_1) (select .cse3 v_antiDerIndex_entry0_1)))) .cse2)))) is different from false [2024-11-13 15:22:13,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408072730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:22:13,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:22:13,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 31 [2024-11-13 15:22:13,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902979805] [2024-11-13 15:22:13,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:22:13,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 15:22:13,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:22:13,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 15:22:13,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1513, Unknown=16, NotChecked=158, Total=1806 [2024-11-13 15:22:13,124 INFO L87 Difference]: Start difference. First operand 418 states and 481 transitions. Second operand has 32 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 32 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:22:25,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:22:31,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:22:36,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:22:51,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:23:04,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 9.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:23:05,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:23:14,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 9.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:23:23,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:23:46,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:24:01,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:24:31,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:24:31,834 INFO L93 Difference]: Finished difference Result 419 states and 481 transitions. [2024-11-13 15:24:31,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 15:24:31,835 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 32 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 130 [2024-11-13 15:24:31,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:24:31,836 INFO L225 Difference]: With dead ends: 419 [2024-11-13 15:24:31,836 INFO L226 Difference]: Without dead ends: 397 [2024-11-13 15:24:31,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 193 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 148.6s TimeCoverageRelationStatistics Valid=254, Invalid=2817, Unknown=17, NotChecked=218, Total=3306 [2024-11-13 15:24:31,837 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 294 mSDsluCounter, 3517 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 21 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 3664 SdHoareTripleChecker+Invalid, 2352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:24:31,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 3664 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2322 Invalid, 9 Unknown, 0 Unchecked, 75.2s Time] [2024-11-13 15:24:31,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-13 15:24:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2024-11-13 15:24:31,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 339 states have (on average 1.336283185840708) internal successors, (453), 392 states have internal predecessors, (453), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:24:31,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 459 transitions. [2024-11-13 15:24:31,843 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 459 transitions. Word has length 130 [2024-11-13 15:24:31,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:24:31,843 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 459 transitions. [2024-11-13 15:24:31,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 32 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:24:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 459 transitions. [2024-11-13 15:24:31,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-13 15:24:31,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:24:31,845 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:31,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 15:24:32,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-13 15:24:32,046 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:24:32,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:32,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1353030203, now seen corresponding path program 2 times [2024-11-13 15:24:32,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:32,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313840835] [2024-11-13 15:24:32,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:32,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:34,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:24:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 61 proven. 549 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2024-11-13 15:24:34,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:34,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313840835] [2024-11-13 15:24:34,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313840835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:24:34,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119724045] [2024-11-13 15:24:34,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:24:34,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:34,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:24:34,064 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:24:34,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:24:34,968 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:24:34,968 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:24:34,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 15:24:34,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:24:36,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:24:37,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:24:39,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:24:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:24:39,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:24:40,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-13 15:24:40,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-13 15:24:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:24:42,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119724045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:24:42,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:24:42,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 15 [2024-11-13 15:24:42,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151377686] [2024-11-13 15:24:42,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:24:42,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 15:24:42,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:42,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 15:24:42,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:24:42,234 INFO L87 Difference]: Start difference. First operand 397 states and 459 transitions. Second operand has 16 states, 15 states have (on average 8.333333333333334) internal successors, (125), 16 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:24:48,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:24:48,903 INFO L93 Difference]: Finished difference Result 669 states and 790 transitions. [2024-11-13 15:24:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:24:48,903 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 8.333333333333334) internal successors, (125), 16 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177 [2024-11-13 15:24:48,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:24:48,906 INFO L225 Difference]: With dead ends: 669 [2024-11-13 15:24:48,906 INFO L226 Difference]: Without dead ends: 669 [2024-11-13 15:24:48,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:24:48,907 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 492 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:24:48,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 1540 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-13 15:24:48,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-11-13 15:24:48,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 466. [2024-11-13 15:24:48,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 408 states have (on average 1.2892156862745099) internal successors, (526), 461 states have internal predecessors, (526), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:24:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 532 transitions. [2024-11-13 15:24:48,917 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 532 transitions. Word has length 177 [2024-11-13 15:24:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:24:48,918 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 532 transitions. [2024-11-13 15:24:48,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 8.333333333333334) internal successors, (125), 16 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:24:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 532 transitions. [2024-11-13 15:24:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-13 15:24:48,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:24:48,920 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:48,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 15:24:49,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-13 15:24:49,120 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:24:49,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1994911167, now seen corresponding path program 2 times [2024-11-13 15:24:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:49,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261674459] [2024-11-13 15:24:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:49,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:50,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:24:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:24:50,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:50,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261674459] [2024-11-13 15:24:50,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261674459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:24:50,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370826586] [2024-11-13 15:24:50,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:24:50,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:50,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:24:50,781 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:24:50,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:24:51,833 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:24:51,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:24:51,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:24:51,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:24:54,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:24:56,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 15:24:56,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:24:56,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:24:58,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-13 15:24:58,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-13 15:24:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:24:59,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370826586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:24:59,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:24:59,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 18 [2024-11-13 15:24:59,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721707694] [2024-11-13 15:24:59,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:24:59,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:24:59,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:59,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:24:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:24:59,429 INFO L87 Difference]: Start difference. First operand 466 states and 532 transitions. Second operand has 18 states, 18 states have (on average 6.5) internal successors, (117), 18 states have internal predecessors, (117), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:25:03,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:25:03,292 INFO L93 Difference]: Finished difference Result 732 states and 853 transitions. [2024-11-13 15:25:03,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:25:03,293 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.5) internal successors, (117), 18 states have internal predecessors, (117), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177 [2024-11-13 15:25:03,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:25:03,296 INFO L225 Difference]: With dead ends: 732 [2024-11-13 15:25:03,296 INFO L226 Difference]: Without dead ends: 732 [2024-11-13 15:25:03,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2024-11-13 15:25:03,296 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 1024 mSDsluCounter, 2154 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:25:03,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 2373 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 15:25:03,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2024-11-13 15:25:03,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 491. [2024-11-13 15:25:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 433 states have (on average 1.3210161662817552) internal successors, (572), 486 states have internal predecessors, (572), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:25:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 578 transitions. [2024-11-13 15:25:03,306 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 578 transitions. Word has length 177 [2024-11-13 15:25:03,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:25:03,306 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 578 transitions. [2024-11-13 15:25:03,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.5) internal successors, (117), 18 states have internal predecessors, (117), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:25:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 578 transitions. [2024-11-13 15:25:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-13 15:25:03,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:25:03,308 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:03,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 15:25:03,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-13 15:25:03,508 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:25:03,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1003489628, now seen corresponding path program 1 times [2024-11-13 15:25:03,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:03,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850723779] [2024-11-13 15:25:03,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:03,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:03,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:25:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2024-11-13 15:25:03,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:03,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850723779] [2024-11-13 15:25:03,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850723779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:25:03,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:25:03,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:25:03,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121652718] [2024-11-13 15:25:03,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:25:03,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:25:03,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:03,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:25:03,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:25:03,975 INFO L87 Difference]: Start difference. First operand 491 states and 578 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:25:04,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:25:04,021 INFO L93 Difference]: Finished difference Result 440 states and 502 transitions. [2024-11-13 15:25:04,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:25:04,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 178 [2024-11-13 15:25:04,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:25:04,023 INFO L225 Difference]: With dead ends: 440 [2024-11-13 15:25:04,023 INFO L226 Difference]: Without dead ends: 440 [2024-11-13 15:25:04,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:25:04,024 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 0 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:25:04,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 379 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:25:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-13 15:25:04,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2024-11-13 15:25:04,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 395 states have (on average 1.2556962025316456) internal successors, (496), 435 states have internal predecessors, (496), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:25:04,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 502 transitions. [2024-11-13 15:25:04,031 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 502 transitions. Word has length 178 [2024-11-13 15:25:04,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:25:04,031 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 502 transitions. [2024-11-13 15:25:04,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:25:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 502 transitions. [2024-11-13 15:25:04,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-13 15:25:04,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:25:04,032 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:04,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-11-13 15:25:04,033 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:25:04,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:04,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1005736891, now seen corresponding path program 1 times [2024-11-13 15:25:04,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:04,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59742019] [2024-11-13 15:25:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:04,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:07,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:25:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:25:07,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:07,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59742019] [2024-11-13 15:25:07,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59742019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:25:07,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377691909] [2024-11-13 15:25:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:07,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:07,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:25:07,251 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:25:07,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:25:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:08,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:25:08,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:09,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:25:09,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:25:09,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:25:12,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-13 15:25:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:25:12,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:25:15,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2024-11-13 15:25:15,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2024-11-13 15:25:15,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2024-11-13 15:25:15,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-13 15:25:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:25:16,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377691909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:25:16,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:25:16,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 20 [2024-11-13 15:25:16,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490797339] [2024-11-13 15:25:16,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:25:16,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:25:16,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:16,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:25:16,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-13 15:25:16,381 INFO L87 Difference]: Start difference. First operand 440 states and 502 transitions. Second operand has 21 states, 20 states have (on average 6.5) internal successors, (130), 21 states have internal predecessors, (130), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:25:23,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:25:23,490 INFO L93 Difference]: Finished difference Result 637 states and 731 transitions. [2024-11-13 15:25:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:25:23,491 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 6.5) internal successors, (130), 21 states have internal predecessors, (130), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 178 [2024-11-13 15:25:23,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:25:23,493 INFO L225 Difference]: With dead ends: 637 [2024-11-13 15:25:23,493 INFO L226 Difference]: Without dead ends: 637 [2024-11-13 15:25:23,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2024-11-13 15:25:23,494 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 723 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:25:23,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 1785 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-13 15:25:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-11-13 15:25:23,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 440. [2024-11-13 15:25:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 395 states have (on average 1.2531645569620253) internal successors, (495), 435 states have internal predecessors, (495), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:25:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 501 transitions. [2024-11-13 15:25:23,502 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 501 transitions. Word has length 178 [2024-11-13 15:25:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:25:23,503 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 501 transitions. [2024-11-13 15:25:23,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 6.5) internal successors, (130), 21 states have internal predecessors, (130), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:25:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 501 transitions. [2024-11-13 15:25:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-13 15:25:23,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:25:23,504 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:23,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 15:25:23,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:23,704 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:25:23,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:23,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1113072775, now seen corresponding path program 1 times [2024-11-13 15:25:23,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:23,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192081012] [2024-11-13 15:25:23,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:23,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:26,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:25:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 507 proven. 102 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-11-13 15:25:26,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:26,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192081012] [2024-11-13 15:25:26,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192081012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:25:26,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322237297] [2024-11-13 15:25:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:26,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:26,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:25:26,074 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:25:26,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:25:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:27,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:25:27,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:27,260 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-13 15:25:27,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-13 15:25:28,062 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 15:25:28,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-13 15:25:28,368 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2024-11-13 15:25:28,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-13 15:25:28,661 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-13 15:25:28,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2024-11-13 15:25:33,714 INFO L349 Elim1Store]: treesize reduction 34, result has 58.5 percent of original size [2024-11-13 15:25:33,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 67 [2024-11-13 15:25:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1142 trivial. 0 not checked. [2024-11-13 15:25:38,696 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:25:38,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322237297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:25:38,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:25:38,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-13 15:25:38,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127584531] [2024-11-13 15:25:38,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:25:38,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:25:38,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:38,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:25:38,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:25:38,697 INFO L87 Difference]: Start difference. First operand 440 states and 501 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:25:39,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:25:39,412 INFO L93 Difference]: Finished difference Result 446 states and 505 transitions. [2024-11-13 15:25:39,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:25:39,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2024-11-13 15:25:39,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:25:39,414 INFO L225 Difference]: With dead ends: 446 [2024-11-13 15:25:39,414 INFO L226 Difference]: Without dead ends: 446 [2024-11-13 15:25:39,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:25:39,414 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 547 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:25:39,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 165 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:25:39,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-13 15:25:39,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 439. [2024-11-13 15:25:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 395 states have (on average 1.2481012658227848) internal successors, (493), 434 states have internal predecessors, (493), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:25:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 499 transitions. [2024-11-13 15:25:39,419 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 499 transitions. Word has length 179 [2024-11-13 15:25:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:25:39,419 INFO L471 AbstractCegarLoop]: Abstraction has 439 states and 499 transitions. [2024-11-13 15:25:39,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:25:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 499 transitions. [2024-11-13 15:25:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-13 15:25:39,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:25:39,420 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:39,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 15:25:39,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:39,620 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:25:39,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash 145517885, now seen corresponding path program 1 times [2024-11-13 15:25:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:39,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118100683] [2024-11-13 15:25:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:39,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:42,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:25:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:25:42,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:42,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118100683] [2024-11-13 15:25:42,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118100683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:25:42,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337115414] [2024-11-13 15:25:42,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:42,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:42,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:25:42,428 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:25:42,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 15:25:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:43,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 15:25:43,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:43,760 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-13 15:25:43,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-13 15:25:43,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:25:45,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:25:45,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:25:45,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2024-11-13 15:25:45,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:25:45,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:25:46,352 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-13 15:25:46,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-13 15:25:52,184 INFO L349 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2024-11-13 15:25:52,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 34 [2024-11-13 15:26:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:26:00,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:26:08,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337115414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:26:08,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:26:08,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 20 [2024-11-13 15:26:08,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517904968] [2024-11-13 15:26:08,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:26:08,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:26:08,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:26:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:26:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=586, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:26:08,156 INFO L87 Difference]: Start difference. First operand 439 states and 499 transitions. Second operand has 21 states, 20 states have (on average 6.1) internal successors, (122), 20 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:26:22,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:26:22,096 INFO L93 Difference]: Finished difference Result 555 states and 598 transitions. [2024-11-13 15:26:22,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 15:26:22,097 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 6.1) internal successors, (122), 20 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 180 [2024-11-13 15:26:22,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:26:22,099 INFO L225 Difference]: With dead ends: 555 [2024-11-13 15:26:22,099 INFO L226 Difference]: Without dead ends: 555 [2024-11-13 15:26:22,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=830, Invalid=2140, Unknown=0, NotChecked=0, Total=2970 [2024-11-13 15:26:22,100 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 1948 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:26:22,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1948 Valid, 1001 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-11-13 15:26:22,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-11-13 15:26:22,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 442. [2024-11-13 15:26:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 398 states have (on average 1.2412060301507537) internal successors, (494), 436 states have internal predecessors, (494), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:26:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 500 transitions. [2024-11-13 15:26:22,109 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 500 transitions. Word has length 180 [2024-11-13 15:26:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:26:22,109 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 500 transitions. [2024-11-13 15:26:22,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 6.1) internal successors, (122), 20 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:26:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 500 transitions. [2024-11-13 15:26:22,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-13 15:26:22,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:26:22,111 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:26:22,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 15:26:22,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:26:22,312 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:26:22,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:26:22,312 INFO L85 PathProgramCache]: Analyzing trace with hash -130158191, now seen corresponding path program 1 times [2024-11-13 15:26:22,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:26:22,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4344270] [2024-11-13 15:26:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:26:22,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:26:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:26:23,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:26:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:26:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:26:23,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:26:23,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4344270] [2024-11-13 15:26:23,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4344270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:26:23,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058063827] [2024-11-13 15:26:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:26:23,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:26:23,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:26:23,718 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:26:23,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 15:26:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:26:24,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 15:26:24,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:26:25,303 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 15:26:25,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 15:26:25,538 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 15:26:25,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 15:26:25,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-13 15:26:31,598 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 15:26:31,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 15:26:31,816 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-11-13 15:26:31,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2024-11-13 15:26:32,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:26:32,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 28 [2024-11-13 15:26:33,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:26:33,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 13 [2024-11-13 15:26:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 1 proven. 551 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2024-11-13 15:26:35,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:26:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 1 proven. 532 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:26:46,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058063827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:26:46,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:26:46,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 10] total 30 [2024-11-13 15:26:46,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643413165] [2024-11-13 15:26:46,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:26:46,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 15:26:46,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:26:46,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 15:26:46,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:26:46,738 INFO L87 Difference]: Start difference. First operand 442 states and 500 transitions. Second operand has 30 states, 30 states have (on average 5.666666666666667) internal successors, (170), 30 states have internal predecessors, (170), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:27:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:27:10,728 INFO L93 Difference]: Finished difference Result 844 states and 981 transitions. [2024-11-13 15:27:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 15:27:10,729 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.666666666666667) internal successors, (170), 30 states have internal predecessors, (170), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 185 [2024-11-13 15:27:10,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:27:10,733 INFO L225 Difference]: With dead ends: 844 [2024-11-13 15:27:10,734 INFO L226 Difference]: Without dead ends: 844 [2024-11-13 15:27:10,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=475, Invalid=2605, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 15:27:10,735 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 3092 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3092 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:27:10,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3092 Valid, 2301 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2024-11-13 15:27:10,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2024-11-13 15:27:10,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 473. [2024-11-13 15:27:10,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 432 states have (on average 1.2592592592592593) internal successors, (544), 467 states have internal predecessors, (544), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:27:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 550 transitions. [2024-11-13 15:27:10,748 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 550 transitions. Word has length 185 [2024-11-13 15:27:10,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:27:10,748 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 550 transitions. [2024-11-13 15:27:10,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.666666666666667) internal successors, (170), 30 states have internal predecessors, (170), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:27:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 550 transitions. [2024-11-13 15:27:10,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-13 15:27:10,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:27:10,750 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:27:10,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 15:27:10,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:27:10,950 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:27:10,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:27:10,951 INFO L85 PathProgramCache]: Analyzing trace with hash 817334418, now seen corresponding path program 1 times [2024-11-13 15:27:10,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:27:10,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698086201] [2024-11-13 15:27:10,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:27:10,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:27:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:27:13,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:27:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:27:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:27:13,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:27:13,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698086201] [2024-11-13 15:27:13,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698086201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:27:13,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903128124] [2024-11-13 15:27:13,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:27:13,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:27:13,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:27:13,522 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:27:13,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 15:27:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:27:14,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 1964 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 15:27:14,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:27:14,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:27:15,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 15:27:16,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-13 15:27:19,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:27:19,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-13 15:27:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-13 15:27:21,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:27:27,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-13 15:27:27,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2024-11-13 15:27:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 37 proven. 533 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-13 15:27:28,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903128124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:27:28,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:27:28,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 29 [2024-11-13 15:27:28,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590805950] [2024-11-13 15:27:28,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:27:28,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 15:27:28,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:27:28,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 15:27:28,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:27:28,800 INFO L87 Difference]: Start difference. First operand 473 states and 550 transitions. Second operand has 30 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 30 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:27:33,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:27:33,441 INFO L93 Difference]: Finished difference Result 478 states and 555 transitions. [2024-11-13 15:27:33,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:27:33,442 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 30 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 188 [2024-11-13 15:27:33,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:27:33,443 INFO L225 Difference]: With dead ends: 478 [2024-11-13 15:27:33,443 INFO L226 Difference]: Without dead ends: 478 [2024-11-13 15:27:33,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:27:33,444 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 424 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:27:33,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 2432 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-13 15:27:33,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-11-13 15:27:33,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 474. [2024-11-13 15:27:33,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 433 states have (on average 1.2586605080831408) internal successors, (545), 468 states have internal predecessors, (545), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:27:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 551 transitions. [2024-11-13 15:27:33,453 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 551 transitions. Word has length 188 [2024-11-13 15:27:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:27:33,454 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 551 transitions. [2024-11-13 15:27:33,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 30 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:27:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 551 transitions. [2024-11-13 15:27:33,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-13 15:27:33,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:27:33,455 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:27:33,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 15:27:33,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:27:33,656 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:27:33,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:27:33,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1707001744, now seen corresponding path program 1 times [2024-11-13 15:27:33,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:27:33,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029024341] [2024-11-13 15:27:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:27:33,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:27:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:27:34,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:27:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:27:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2024-11-13 15:27:34,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:27:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029024341] [2024-11-13 15:27:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029024341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:27:34,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:27:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:27:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626891628] [2024-11-13 15:27:34,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:27:34,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:27:34,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:27:34,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:27:34,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:27:34,539 INFO L87 Difference]: Start difference. First operand 474 states and 551 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:27:37,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:27:37,746 INFO L93 Difference]: Finished difference Result 513 states and 588 transitions. [2024-11-13 15:27:37,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:27:37,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 188 [2024-11-13 15:27:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:27:37,749 INFO L225 Difference]: With dead ends: 513 [2024-11-13 15:27:37,749 INFO L226 Difference]: Without dead ends: 513 [2024-11-13 15:27:37,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:27:37,750 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 66 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:27:37,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 757 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-13 15:27:37,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-13 15:27:37,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 472. [2024-11-13 15:27:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 433 states have (on average 1.2471131639722863) internal successors, (540), 466 states have internal predecessors, (540), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:27:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 546 transitions. [2024-11-13 15:27:37,758 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 546 transitions. Word has length 188 [2024-11-13 15:27:37,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:27:37,758 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 546 transitions. [2024-11-13 15:27:37,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:27:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 546 transitions. [2024-11-13 15:27:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-13 15:27:37,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:27:37,759 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:27:37,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-11-13 15:27:37,760 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:27:37,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:27:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1707001743, now seen corresponding path program 1 times [2024-11-13 15:27:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:27:37,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459972681] [2024-11-13 15:27:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:27:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:27:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:27:39,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:27:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:27:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2024-11-13 15:27:39,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:27:39,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459972681] [2024-11-13 15:27:39,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459972681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:27:39,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:27:39,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:27:39,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082154554] [2024-11-13 15:27:39,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:27:39,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:27:39,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:27:39,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:27:39,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:27:39,149 INFO L87 Difference]: Start difference. First operand 472 states and 546 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:27:42,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:27:42,135 INFO L93 Difference]: Finished difference Result 492 states and 561 transitions. [2024-11-13 15:27:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:27:42,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 188 [2024-11-13 15:27:42,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:27:42,137 INFO L225 Difference]: With dead ends: 492 [2024-11-13 15:27:42,137 INFO L226 Difference]: Without dead ends: 492 [2024-11-13 15:27:42,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:27:42,137 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 52 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:27:42,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 808 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 15:27:42,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-13 15:27:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 471. [2024-11-13 15:27:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 433 states have (on average 1.2401847575057736) internal successors, (537), 465 states have internal predecessors, (537), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:27:42,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 543 transitions. [2024-11-13 15:27:42,146 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 543 transitions. Word has length 188 [2024-11-13 15:27:42,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:27:42,146 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 543 transitions. [2024-11-13 15:27:42,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:27:42,146 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 543 transitions. [2024-11-13 15:27:42,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-13 15:27:42,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:27:42,147 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:27:42,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-11-13 15:27:42,147 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:27:42,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:27:42,148 INFO L85 PathProgramCache]: Analyzing trace with hash -432436355, now seen corresponding path program 1 times [2024-11-13 15:27:42,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:27:42,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965365147] [2024-11-13 15:27:42,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:27:42,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:27:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:27:45,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:27:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:27:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:27:45,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:27:45,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965365147] [2024-11-13 15:27:45,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965365147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:27:45,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655652681] [2024-11-13 15:27:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:27:45,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:27:45,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:27:45,402 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:27:45,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 15:27:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:27:46,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 1966 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 15:27:46,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:27:46,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:27:46,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:27:46,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:27:50,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:27:50,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-13 15:27:52,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:27:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:27:52,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:27:57,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-13 15:27:57,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2024-11-13 15:27:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:27:58,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655652681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:27:58,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:27:58,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 21 [2024-11-13 15:27:58,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305856127] [2024-11-13 15:27:58,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:27:58,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 15:27:58,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:27:58,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 15:27:58,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:27:58,689 INFO L87 Difference]: Start difference. First operand 471 states and 543 transitions. Second operand has 22 states, 21 states have (on average 6.190476190476191) internal successors, (130), 22 states have internal predecessors, (130), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:28:03,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:28:03,222 INFO L93 Difference]: Finished difference Result 474 states and 546 transitions. [2024-11-13 15:28:03,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:28:03,222 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.190476190476191) internal successors, (130), 22 states have internal predecessors, (130), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189 [2024-11-13 15:28:03,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:28:03,224 INFO L225 Difference]: With dead ends: 474 [2024-11-13 15:28:03,224 INFO L226 Difference]: Without dead ends: 474 [2024-11-13 15:28:03,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 369 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:28:03,224 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 394 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:28:03,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 2358 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-13 15:28:03,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-13 15:28:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 472. [2024-11-13 15:28:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 434 states have (on average 1.23963133640553) internal successors, (538), 466 states have internal predecessors, (538), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:28:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 544 transitions. [2024-11-13 15:28:03,231 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 544 transitions. Word has length 189 [2024-11-13 15:28:03,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:28:03,231 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 544 transitions. [2024-11-13 15:28:03,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.190476190476191) internal successors, (130), 22 states have internal predecessors, (130), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:28:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 544 transitions. [2024-11-13 15:28:03,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-13 15:28:03,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:28:03,233 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:28:03,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 15:28:03,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-13 15:28:03,433 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr85ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:28:03,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:28:03,433 INFO L85 PathProgramCache]: Analyzing trace with hash -520624652, now seen corresponding path program 1 times [2024-11-13 15:28:03,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:28:03,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376825674] [2024-11-13 15:28:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:28:03,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:28:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:28:07,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:28:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:28:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 75 proven. 535 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2024-11-13 15:28:07,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:28:07,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376825674] [2024-11-13 15:28:07,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376825674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:28:07,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459699288] [2024-11-13 15:28:07,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:28:07,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:28:07,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:28:07,619 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:28:07,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 15:28:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:28:08,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 1968 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:28:08,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:28:08,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:28:08,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:28:09,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 15:28:13,655 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 15:28:13,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2024-11-13 15:28:14,081 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-13 15:28:14,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 32 [2024-11-13 15:28:14,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:28:14,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-13 15:28:17,602 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 15:28:17,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 20 [2024-11-13 15:28:18,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:28:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 6 proven. 654 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2024-11-13 15:28:18,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:28:29,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2024-11-13 15:28:29,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 62 [2024-11-13 15:28:45,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 115 proven. 545 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2024-11-13 15:28:45,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459699288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:28:45,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:28:45,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 33 [2024-11-13 15:28:45,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509142047] [2024-11-13 15:28:45,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:28:45,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 15:28:45,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:28:45,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 15:28:45,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=932, Unknown=4, NotChecked=0, Total=1122 [2024-11-13 15:28:45,835 INFO L87 Difference]: Start difference. First operand 472 states and 544 transitions. Second operand has 34 states, 33 states have (on average 5.121212121212121) internal successors, (169), 34 states have internal predecessors, (169), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:28:56,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:28:56,440 INFO L93 Difference]: Finished difference Result 473 states and 545 transitions. [2024-11-13 15:28:56,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:28:56,440 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 5.121212121212121) internal successors, (169), 34 states have internal predecessors, (169), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 190 [2024-11-13 15:28:56,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:28:56,443 INFO L225 Difference]: With dead ends: 473 [2024-11-13 15:28:56,443 INFO L226 Difference]: Without dead ends: 473 [2024-11-13 15:28:56,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=198, Invalid=988, Unknown=4, NotChecked=0, Total=1190 [2024-11-13 15:28:56,443 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 475 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:28:56,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 2097 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2024-11-13 15:28:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-13 15:28:56,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2024-11-13 15:28:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 435 states have (on average 1.239080459770115) internal successors, (539), 467 states have internal predecessors, (539), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:28:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 545 transitions. [2024-11-13 15:28:56,449 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 545 transitions. Word has length 190 [2024-11-13 15:28:56,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:28:56,449 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 545 transitions. [2024-11-13 15:28:56,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 5.121212121212121) internal successors, (169), 34 states have internal predecessors, (169), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:28:56,449 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 545 transitions. [2024-11-13 15:28:56,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-13 15:28:56,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:28:56,451 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:28:56,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 15:28:56,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-11-13 15:28:56,651 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:28:56,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:28:56,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2104069641, now seen corresponding path program 1 times [2024-11-13 15:28:56,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:28:56,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881153012] [2024-11-13 15:28:56,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:28:56,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:28:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:01,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:29:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 0 proven. 535 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:29:01,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:29:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881153012] [2024-11-13 15:29:01,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881153012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:29:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844310740] [2024-11-13 15:29:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:01,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:01,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:29:01,057 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:29:01,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 15:29:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:02,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 1974 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 15:29:02,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:29:02,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:29:02,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-13 15:29:02,957 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:29:02,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:29:03,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:29:03,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 15:29:03,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:29:07,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:29:07,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2024-11-13 15:29:11,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 15:29:11,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:29:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 0 proven. 535 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:29:11,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:29:14,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-13 15:29:18,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-13 15:29:18,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 102 [2024-11-13 15:29:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 0 proven. 535 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:29:19,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844310740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:29:19,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:29:19,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 33 [2024-11-13 15:29:19,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414458449] [2024-11-13 15:29:19,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:29:19,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 15:29:19,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:29:19,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 15:29:19,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 15:29:19,629 INFO L87 Difference]: Start difference. First operand 473 states and 545 transitions. Second operand has 34 states, 33 states have (on average 5.575757575757576) internal successors, (184), 34 states have internal predecessors, (184), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:29:35,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:35,352 INFO L93 Difference]: Finished difference Result 485 states and 559 transitions. [2024-11-13 15:29:35,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:29:35,352 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 5.575757575757576) internal successors, (184), 34 states have internal predecessors, (184), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 192 [2024-11-13 15:29:35,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:35,354 INFO L225 Difference]: With dead ends: 485 [2024-11-13 15:29:35,354 INFO L226 Difference]: Without dead ends: 485 [2024-11-13 15:29:35,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=257, Invalid=1383, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 15:29:35,355 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 190 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:35,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 2023 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1847 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2024-11-13 15:29:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-11-13 15:29:35,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 479. [2024-11-13 15:29:35,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 441 states have (on average 1.2403628117913832) internal successors, (547), 473 states have internal predecessors, (547), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:29:35,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 553 transitions. [2024-11-13 15:29:35,363 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 553 transitions. Word has length 192 [2024-11-13 15:29:35,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:35,363 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 553 transitions. [2024-11-13 15:29:35,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 5.575757575757576) internal successors, (184), 34 states have internal predecessors, (184), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:29:35,364 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 553 transitions. [2024-11-13 15:29:35,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-13 15:29:35,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:35,365 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:29:35,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 15:29:35,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-11-13 15:29:35,566 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:29:35,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2104069640, now seen corresponding path program 1 times [2024-11-13 15:29:35,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:29:35,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260060196] [2024-11-13 15:29:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:35,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:29:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:36,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:29:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 0 proven. 535 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:29:36,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:29:36,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260060196] [2024-11-13 15:29:36,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260060196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:29:36,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562172404] [2024-11-13 15:29:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:36,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:36,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:29:36,642 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:29:36,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 15:29:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:37,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 1974 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:29:37,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:29:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 5 proven. 530 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:29:43,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:29:46,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-13 15:29:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 5 proven. 530 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-13 15:29:48,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562172404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:29:48,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:29:48,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-13 15:29:48,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231586705] [2024-11-13 15:29:48,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:29:48,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:29:48,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:29:48,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:29:48,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:29:48,841 INFO L87 Difference]: Start difference. First operand 479 states and 553 transitions. Second operand has 20 states, 19 states have (on average 10.052631578947368) internal successors, (191), 20 states have internal predecessors, (191), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:29:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:53,311 INFO L93 Difference]: Finished difference Result 515 states and 580 transitions. [2024-11-13 15:29:53,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:29:53,311 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 10.052631578947368) internal successors, (191), 20 states have internal predecessors, (191), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 192 [2024-11-13 15:29:53,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:53,313 INFO L225 Difference]: With dead ends: 515 [2024-11-13 15:29:53,313 INFO L226 Difference]: Without dead ends: 515 [2024-11-13 15:29:53,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:29:53,314 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 222 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:53,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1006 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-13 15:29:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-13 15:29:53,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 484. [2024-11-13 15:29:53,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 446 states have (on average 1.2399103139013452) internal successors, (553), 478 states have internal predecessors, (553), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:29:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 559 transitions. [2024-11-13 15:29:53,323 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 559 transitions. Word has length 192 [2024-11-13 15:29:53,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:53,324 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 559 transitions. [2024-11-13 15:29:53,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 10.052631578947368) internal successors, (191), 20 states have internal predecessors, (191), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:29:53,324 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 559 transitions. [2024-11-13 15:29:53,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-13 15:29:53,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:53,325 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:29:53,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 15:29:53,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-11-13 15:29:53,527 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:29:53,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:53,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1385395724, now seen corresponding path program 1 times [2024-11-13 15:29:53,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:29:53,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480338816] [2024-11-13 15:29:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:53,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:29:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:29:53,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:29:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:29:54,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:29:54,368 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 15:29:54,369 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 96 remaining) [2024-11-13 15:29:54,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 96 remaining) [2024-11-13 15:29:54,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 96 remaining) [2024-11-13 15:29:54,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 96 remaining) [2024-11-13 15:29:54,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 96 remaining) [2024-11-13 15:29:54,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 96 remaining) [2024-11-13 15:29:54,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 96 remaining) [2024-11-13 15:29:54,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 96 remaining) [2024-11-13 15:29:54,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 96 remaining) [2024-11-13 15:29:54,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 96 remaining) [2024-11-13 15:29:54,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 96 remaining) [2024-11-13 15:29:54,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 96 remaining) [2024-11-13 15:29:54,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 96 remaining) [2024-11-13 15:29:54,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 96 remaining) [2024-11-13 15:29:54,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 96 remaining) [2024-11-13 15:29:54,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 96 remaining) [2024-11-13 15:29:54,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE (70 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE (69 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 96 remaining) [2024-11-13 15:29:54,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 96 remaining) [2024-11-13 15:29:54,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 96 remaining) [2024-11-13 15:29:54,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 96 remaining) [2024-11-13 15:29:54,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 96 remaining) [2024-11-13 15:29:54,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 96 remaining) [2024-11-13 15:29:54,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 96 remaining) [2024-11-13 15:29:54,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 96 remaining) [2024-11-13 15:29:54,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK (54 of 96 remaining) [2024-11-13 15:29:54,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 96 remaining) [2024-11-13 15:29:54,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 96 remaining) [2024-11-13 15:29:54,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_DEREFERENCE (51 of 96 remaining) [2024-11-13 15:29:54,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_DEREFERENCE (50 of 96 remaining) [2024-11-13 15:29:54,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_DEREFERENCE (49 of 96 remaining) [2024-11-13 15:29:54,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE (48 of 96 remaining) [2024-11-13 15:29:54,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 96 remaining) [2024-11-13 15:29:54,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 96 remaining) [2024-11-13 15:29:54,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 96 remaining) [2024-11-13 15:29:54,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 96 remaining) [2024-11-13 15:29:54,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_DEREFERENCE (43 of 96 remaining) [2024-11-13 15:29:54,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_DEREFERENCE (42 of 96 remaining) [2024-11-13 15:29:54,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 96 remaining) [2024-11-13 15:29:54,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 96 remaining) [2024-11-13 15:29:54,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 96 remaining) [2024-11-13 15:29:54,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 96 remaining) [2024-11-13 15:29:54,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 96 remaining) [2024-11-13 15:29:54,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 96 remaining) [2024-11-13 15:29:54,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 96 remaining) [2024-11-13 15:29:54,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_DEREFERENCE (32 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_DEREFERENCE (31 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_DEREFERENCE (26 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70ASSERT_VIOLATIONMEMORY_DEREFERENCE (25 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71ASSERT_VIOLATIONMEMORY_DEREFERENCE (24 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_DEREFERENCE (20 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_DEREFERENCE (19 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 96 remaining) [2024-11-13 15:29:54,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_FREE (12 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr84ASSERT_VIOLATIONMEMORY_FREE (11 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr85ASSERT_VIOLATIONMEMORY_FREE (10 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr86ASSERT_VIOLATIONMEMORY_FREE (9 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr87ASSERT_VIOLATIONMEMORY_FREE (8 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr88ASSERT_VIOLATIONMEMORY_FREE (7 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_FREE (6 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr90ASSERT_VIOLATIONMEMORY_FREE (5 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr91ASSERT_VIOLATIONMEMORY_FREE (4 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr92ASSERT_VIOLATIONMEMORY_FREE (3 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr93ASSERT_VIOLATIONMEMORY_FREE (2 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr94ASSERT_VIOLATIONMEMORY_FREE (1 of 96 remaining) [2024-11-13 15:29:54,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr95ASSERT_VIOLATIONMEMORY_LEAK (0 of 96 remaining) [2024-11-13 15:29:54,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-11-13 15:29:54,385 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:29:54,561 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 15:29:54,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 03:29:54 BoogieIcfgContainer [2024-11-13 15:29:54,569 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 15:29:54,569 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:29:54,570 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:29:54,571 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:29:54,571 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:18:35" (3/4) ... [2024-11-13 15:29:54,574 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 15:29:54,575 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:29:54,576 INFO L158 Benchmark]: Toolchain (without parser) took 683402.74ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 116.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 347.8MB. Max. memory is 16.1GB. [2024-11-13 15:29:54,576 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 142.6MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:29:54,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1336.82ms. Allocated memory is still 142.6MB. Free memory was 116.6MB in the beginning and 70.4MB in the end (delta: 46.2MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-11-13 15:29:54,576 INFO L158 Benchmark]: Boogie Procedure Inliner took 125.14ms. Allocated memory is still 142.6MB. Free memory was 70.4MB in the beginning and 63.8MB in the end (delta: 6.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:29:54,577 INFO L158 Benchmark]: Boogie Preprocessor took 213.22ms. Allocated memory is still 142.6MB. Free memory was 63.8MB in the beginning and 53.5MB in the end (delta: 10.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 15:29:54,579 INFO L158 Benchmark]: RCFGBuilder took 2178.55ms. Allocated memory is still 142.6MB. Free memory was 53.5MB in the beginning and 94.6MB in the end (delta: -41.1MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2024-11-13 15:29:54,579 INFO L158 Benchmark]: TraceAbstraction took 679534.59ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 93.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 317.2MB. Max. memory is 16.1GB. [2024-11-13 15:29:54,579 INFO L158 Benchmark]: Witness Printer took 5.73ms. Allocated memory is still 1.6GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 214.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:29:54,580 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 142.6MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1336.82ms. Allocated memory is still 142.6MB. Free memory was 116.6MB in the beginning and 70.4MB in the end (delta: 46.2MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 125.14ms. Allocated memory is still 142.6MB. Free memory was 70.4MB in the beginning and 63.8MB in the end (delta: 6.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 213.22ms. Allocated memory is still 142.6MB. Free memory was 63.8MB in the beginning and 53.5MB in the end (delta: 10.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 2178.55ms. Allocated memory is still 142.6MB. Free memory was 53.5MB in the beginning and 94.6MB in the end (delta: -41.1MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * TraceAbstraction took 679534.59ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 93.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 317.2MB. Max. memory is 16.1GB. * Witness Printer took 5.73ms. Allocated memory is still 1.6GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 214.4kB). 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 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: overapproximation of strcmp at line 1383, overapproximation of strlen at line 1488. Possible FailurePath: [L1318] static const char *applet_name; [L1319] static signed int bb_errno_location; [L1319] static signed int bb_errno_location; [L1320] static signed int * const bb_errno = &bb_errno_location; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; [L1512] static struct utmp dummy_utmp; VAL [applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1575] char *a = malloc(11); [L1576] a[10] = 0 VAL [applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1577] int i=0; VAL [a={-1:0}, applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, i=0] [L1577] COND TRUE i<10 [L1578] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1577] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, i=1] [L1577] COND TRUE i<10 [L1578] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1577] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, i=2] [L1577] COND TRUE i<10 [L1578] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1577] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, i=3] [L1577] COND TRUE i<10 [L1578] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1577] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, i=4] [L1577] COND TRUE i<10 [L1578] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1577] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, i=5] [L1577] COND TRUE i<10 [L1578] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1577] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, i=6] [L1577] COND TRUE i<10 [L1578] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1577] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, i=7] [L1577] COND TRUE i<10 [L1578] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1577] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, i=8] [L1577] COND TRUE i<10 [L1578] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1577] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, i=9] [L1577] COND TRUE i<10 [L1578] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1577] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, i=10] [L1577] COND FALSE !(i<10) VAL [a={-1:0}, applet_name={0:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1579] applet_name = a [L1580] bb_errno_location = __VERIFIER_nondet_int() VAL [applet_name={-1:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}] [L1581] optind = 1 [L1582] int argc = __VERIFIER_nondet_int(); [L1583] CALL assume_abort_if_not(argc >= 1 && argc <= 10000) VAL [\old(cond)=1, applet_name={-1:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, optind=1] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, applet_name={-1:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, optind=1] [L1583] RET assume_abort_if_not(argc >= 1 && argc <= 10000) VAL [a={-1:0}, applet_name={-1:0}, argc=2, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, optind=1] [L1584] char **argv=malloc((argc+1)*sizeof(char*)); [L1585] char **mem_track=malloc((argc+1)*sizeof(char*)); [L1586] argv[argc]=0 VAL [applet_name={-1:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, optind=1] [L1587] int i=0; VAL [a={-1:0}, applet_name={-1:0}, argc=2, argv={331:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, i=0, mem_track={-13:0}, optind=1] [L1587] COND TRUE i= 2u) [L1395] argv = argv + 1l VAL [applet_name={-1:0}, argv={331:8}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, optind=1] [L1396] EXPR \read(**argv) VAL [applet_name={-1:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, optind=1] [L1396] CALL bb_get_last_path_component_strip(*argv) [L1443] char *slash; [L1444] CALL last_char_is(path, 47) [L1482] COND TRUE !(s == ((const char *)((void *)0))) VAL [applet_name={-1:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, optind=1] [L1484] EXPR \read(*s) VAL [applet_name={-1:0}, bb_errno={10:0}, bb_errno_location={10:0}, dummy_utmp={11:0}, optind=1] [L1484] COND TRUE !((signed int)*s == 0) [L1486] unsigned long int sz; [L1487] unsigned long int return_value_strlen$1; VAL [applet_name={-1:0}, bb_errno={10:0}, bb_errno_location={10:0}, c=47, dummy_utmp={11:0}, optind=1, s={-25:0}] [L1488] EXPR strlen(s) VAL [applet_name={-1:0}, bb_errno={10:0}, bb_errno_location={10:0}, c=47, dummy_utmp={11:0}, optind=1, s={-25:0}] [L1488] EXPR strlen(s) [L1488] return_value_strlen$1=strlen(s) [L1489] sz = return_value_strlen$1 - (unsigned long int)1 [L1490] s = s + (signed long int)sz VAL [applet_name={-1:0}, bb_errno={10:0}, bb_errno_location={10:0}, c=47, dummy_utmp={11:0}, optind=1, s={-25:-9223372036854775808}] [L1491] \read(*s) - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1342]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1342]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 22]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1488]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1488]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1397]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1397]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1402]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1402]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1597]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1597]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1597]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1598]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1598]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1598]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1599]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1599]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1599]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1600]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1600]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1600]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1573]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 247 locations, 96 error locations. Started 1 CEGAR loops. OverallTime: 679.3s, OverallIterations: 64, TraceHistogramMax: 20, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 264.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 23374 SdHoareTripleChecker+Valid, 176.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23328 mSDsluCounter, 69275 SdHoareTripleChecker+Invalid, 171.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56702 mSDsCounter, 486 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26667 IncrementalHoareTripleChecker+Invalid, 27162 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 486 mSolverCounterUnsat, 12573 mSDtfsCounter, 26667 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8559 GetRequests, 7647 SyntacticMatches, 31 SemanticMatches, 881 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 6959 ImplicationChecksByTransitivity, 236.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=510occurred in iteration=30, InterpolantAutomatonStates: 547, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 63 MinimizatonAttempts, 2577 StatesRemovedByMinimization, 45 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.5s SsaConstructionTime, 12.8s SatisfiabilityAnalysisTime, 370.8s InterpolantComputationTime, 10967 NumberOfCodeBlocks, 10866 NumberOfCodeBlocksAsserted, 101 NumberOfCheckSat, 14111 ConstructedInterpolants, 806 QuantifiedInterpolants, 180908 SizeOfPredicates, 223 NumberOfNonLiveVariables, 52016 ConjunctsInSsa, 632 ConjunctsInUnsatCore, 124 InterpolantComputations, 32 PerfectInterpolantSequences, 47076/63474 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 15:29:54,802 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-11-13 15:29:54,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 77d101c015aa227688f75df3fd905b74c24dd55f9fd8e8478582e7eae4d24583 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:29:57,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:29:57,539 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2024-11-13 15:29:57,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:29:57,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:29:57,619 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:29:57,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:29:57,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:29:57,624 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:29:57,624 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:29:57,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:29:57,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:29:57,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:29:57,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:29:57,625 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:29:57,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:29:57,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:29:57,626 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:29:57,626 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:29:57,626 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:29:57,626 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:29:57,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:29:57,627 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:29:57,629 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 15:29:57,629 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:29:57,630 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 15:29:57,630 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:29:57,630 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:29:57,630 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:29:57,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:29:57,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:29:57,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:29:57,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:29:57,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:29:57,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:29:57,631 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 15:29:57,631 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 15:29:57,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:29:57,631 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:29:57,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:29:57,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:29:57,631 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_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77d101c015aa227688f75df3fd905b74c24dd55f9fd8e8478582e7eae4d24583 [2024-11-13 15:29:57,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:29:57,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:29:57,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:29:57,938 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:29:57,938 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:29:57,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i Unable to find full path for "g++" [2024-11-13 15:29:59,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:30:00,364 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:30:00,367 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2024-11-13 15:30:00,397 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/data/a0734488c/5baa32d936014370bdf1112fe712dcf0/FLAG6fc094540 [2024-11-13 15:30:00,424 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/data/a0734488c/5baa32d936014370bdf1112fe712dcf0 [2024-11-13 15:30:00,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:30:00,429 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:30:00,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:30:00,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:30:00,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:30:00,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:30:00" (1/1) ... [2024-11-13 15:30:00,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5063abc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:00, skipping insertion in model container [2024-11-13 15:30:00,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:30:00" (1/1) ... [2024-11-13 15:30:00,501 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:30:01,167 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:30:01,184 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:30:01,188 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:30:01,192 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:30:01,196 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:30:01,208 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:30:01,208 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:30:01,209 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:30:01,216 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:30:01,221 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:30:01,244 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:30:01,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:30:01,286 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:30:01,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:30:01,581 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:30:01,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01 WrapperNode [2024-11-13 15:30:01,582 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:30:01,583 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:30:01,583 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:30:01,583 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:30:01,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01" (1/1) ... [2024-11-13 15:30:01,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01" (1/1) ... [2024-11-13 15:30:01,678 INFO L138 Inliner]: procedures = 353, calls = 463, calls flagged for inlining = 11, calls inlined = 10, statements flattened = 731 [2024-11-13 15:30:01,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:30:01,679 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:30:01,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:30:01,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:30:01,692 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01" (1/1) ... [2024-11-13 15:30:01,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01" (1/1) ... [2024-11-13 15:30:01,713 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01" (1/1) ... [2024-11-13 15:30:01,784 INFO L175 MemorySlicer]: Split 412 memory accesses to 14 slices as follows [2, 3, 3, 3, 4, 4, 4, 3, 3, 355, 12, 2, 2, 12]. 86 percent of accesses are in the largest equivalence class. The 379 initializations are split as follows [2, 3, 3, 3, 3, 3, 3, 3, 1, 355, 0, 0, 0, 0]. The 11 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 5, 2, 1, 2]. [2024-11-13 15:30:01,784 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01" (1/1) ... [2024-11-13 15:30:01,784 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01" (1/1) ... [2024-11-13 15:30:01,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01" (1/1) ... [2024-11-13 15:30:01,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01" (1/1) ... [2024-11-13 15:30:01,902 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01" (1/1) ... [2024-11-13 15:30:01,908 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01" (1/1) ... [2024-11-13 15:30:01,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:30:01,928 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:30:01,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:30:01,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:30:01,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01" (1/1) ... [2024-11-13 15:30:01,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:30:01,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:01,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:30:01,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:30:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-13 15:30:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-13 15:30:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-13 15:30:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-11-13 15:30:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2024-11-13 15:30:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2024-11-13 15:30:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2024-11-13 15:30:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2024-11-13 15:30:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2024-11-13 15:30:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2024-11-13 15:30:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2024-11-13 15:30:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2024-11-13 15:30:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#12 [2024-11-13 15:30:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#13 [2024-11-13 15:30:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 15:30:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 15:30:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-13 15:30:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-13 15:30:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-11-13 15:30:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2024-11-13 15:30:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2024-11-13 15:30:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2024-11-13 15:30:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2024-11-13 15:30:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2024-11-13 15:30:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2024-11-13 15:30:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2024-11-13 15:30:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#12 [2024-11-13 15:30:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#13 [2024-11-13 15:30:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 15:30:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 15:30:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:30:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2024-11-13 15:30:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2024-11-13 15:30:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2024-11-13 15:30:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2024-11-13 15:30:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2024-11-13 15:30:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2024-11-13 15:30:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2024-11-13 15:30:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#12 [2024-11-13 15:30:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#13 [2024-11-13 15:30:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:30:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 15:30:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 15:30:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-13 15:30:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-13 15:30:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-11-13 15:30:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2024-11-13 15:30:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2024-11-13 15:30:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2024-11-13 15:30:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2024-11-13 15:30:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2024-11-13 15:30:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2024-11-13 15:30:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#11 [2024-11-13 15:30:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#12 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#13 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#11 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#12 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#13 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 15:30:02,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#12 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#13 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2024-11-13 15:30:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2024-11-13 15:30:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2024-11-13 15:30:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2024-11-13 15:30:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#11 [2024-11-13 15:30:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#12 [2024-11-13 15:30:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#13 [2024-11-13 15:30:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:30:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:30:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:30:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 15:30:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 15:30:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 15:30:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-13 15:30:02,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-13 15:30:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-13 15:30:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-13 15:30:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-13 15:30:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-13 15:30:02,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-13 15:30:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-13 15:30:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-13 15:30:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-13 15:30:02,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:30:02,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:30:02,550 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:30:02,553 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:30:04,620 INFO L? ?]: Removed 262 outVars from TransFormulas that were not future-live. [2024-11-13 15:30:04,620 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:30:04,646 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:30:04,649 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-13 15:30:04,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:30:04 BoogieIcfgContainer [2024-11-13 15:30:04,651 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:30:04,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:30:04,656 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:30:04,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:30:04,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:30:00" (1/3) ... [2024-11-13 15:30:04,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de9b36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:30:04, skipping insertion in model container [2024-11-13 15:30:04,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:01" (2/3) ... [2024-11-13 15:30:04,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de9b36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:30:04, skipping insertion in model container [2024-11-13 15:30:04,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:30:04" (3/3) ... [2024-11-13 15:30:04,665 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-2.i [2024-11-13 15:30:04,683 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:30:04,685 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG basename-2.i that has 2 procedures, 247 locations, 1 initial locations, 7 loop locations, and 96 error locations. [2024-11-13 15:30:04,745 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:30:04,764 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;@37a25ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:30:04,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2024-11-13 15:30:04,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 247 states, 147 states have (on average 1.945578231292517) internal successors, (286), 243 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:04,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 15:30:04,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:04,781 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 15:30:04,781 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:04,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:04,787 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2024-11-13 15:30:04,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:04,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274709057] [2024-11-13 15:30:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:04,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:04,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:04,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:04,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:30:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:05,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:30:05,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:05,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:30:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:30:05,887 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:05,887 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:05,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274709057] [2024-11-13 15:30:05,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274709057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:05,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:05,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:30:05,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307486007] [2024-11-13 15:30:05,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:05,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:05,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:05,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:05,928 INFO L87 Difference]: Start difference. First operand has 247 states, 147 states have (on average 1.945578231292517) internal successors, (286), 243 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:06,593 INFO L93 Difference]: Finished difference Result 257 states and 289 transitions. [2024-11-13 15:30:06,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:06,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-13 15:30:06,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:06,604 INFO L225 Difference]: With dead ends: 257 [2024-11-13 15:30:06,604 INFO L226 Difference]: Without dead ends: 255 [2024-11-13 15:30:06,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:06,609 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 240 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:06,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 205 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:30:06,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-13 15:30:06,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 238. [2024-11-13 15:30:06,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 143 states have (on average 1.8531468531468531) internal successors, (265), 234 states have internal predecessors, (265), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:06,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 269 transitions. [2024-11-13 15:30:06,688 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 269 transitions. Word has length 3 [2024-11-13 15:30:06,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:06,689 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 269 transitions. [2024-11-13 15:30:06,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:06,689 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 269 transitions. [2024-11-13 15:30:06,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 15:30:06,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:06,690 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 15:30:06,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:30:06,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:06,891 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:06,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:06,892 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2024-11-13 15:30:06,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:06,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139538882] [2024-11-13 15:30:06,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:06,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:06,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:06,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:06,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:30:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:07,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:30:07,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:07,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:30:07,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:30:07,781 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:07,781 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:07,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139538882] [2024-11-13 15:30:07,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139538882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:07,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:07,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:30:07,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424958479] [2024-11-13 15:30:07,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:07,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:07,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:07,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:07,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:07,784 INFO L87 Difference]: Start difference. First operand 238 states and 269 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:08,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:08,552 INFO L93 Difference]: Finished difference Result 237 states and 268 transitions. [2024-11-13 15:30:08,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:08,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-13 15:30:08,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:08,554 INFO L225 Difference]: With dead ends: 237 [2024-11-13 15:30:08,555 INFO L226 Difference]: Without dead ends: 237 [2024-11-13 15:30:08,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:08,557 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 11 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:08,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 430 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:30:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-13 15:30:08,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2024-11-13 15:30:08,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 143 states have (on average 1.8461538461538463) internal successors, (264), 233 states have internal predecessors, (264), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 268 transitions. [2024-11-13 15:30:08,571 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 268 transitions. Word has length 3 [2024-11-13 15:30:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:08,571 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 268 transitions. [2024-11-13 15:30:08,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 268 transitions. [2024-11-13 15:30:08,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 15:30:08,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:08,572 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 15:30:08,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:30:08,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:08,773 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:08,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:08,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2024-11-13 15:30:08,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:08,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033457699] [2024-11-13 15:30:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:08,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:08,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:08,778 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:08,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:30:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:09,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:30:09,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:09,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:30:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:30:09,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:09,806 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:09,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033457699] [2024-11-13 15:30:09,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033457699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:09,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:09,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:09,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381522474] [2024-11-13 15:30:09,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:09,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:30:09,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:09,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:30:09,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:09,808 INFO L87 Difference]: Start difference. First operand 237 states and 268 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:10,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:10,569 INFO L93 Difference]: Finished difference Result 240 states and 271 transitions. [2024-11-13 15:30:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:30:10,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-13 15:30:10,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:10,572 INFO L225 Difference]: With dead ends: 240 [2024-11-13 15:30:10,572 INFO L226 Difference]: Without dead ends: 240 [2024-11-13 15:30:10,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:10,573 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 12 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:10,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 430 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:30:10,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-13 15:30:10,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2024-11-13 15:30:10,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 145 states have (on average 1.8344827586206895) internal successors, (266), 235 states have internal predecessors, (266), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 270 transitions. [2024-11-13 15:30:10,585 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 270 transitions. Word has length 6 [2024-11-13 15:30:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:10,586 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 270 transitions. [2024-11-13 15:30:10,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:10,586 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 270 transitions. [2024-11-13 15:30:10,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:30:10,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:10,587 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:10,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:30:10,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:10,787 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:10,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:10,788 INFO L85 PathProgramCache]: Analyzing trace with hash 71429206, now seen corresponding path program 1 times [2024-11-13 15:30:10,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:10,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837010176] [2024-11-13 15:30:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:10,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:10,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:10,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:10,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:30:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:11,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:30:11,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:11,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:30:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:30:11,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:30:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:30:12,343 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:12,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837010176] [2024-11-13 15:30:12,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837010176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:30:12,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:30:12,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-13 15:30:12,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856125559] [2024-11-13 15:30:12,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:30:12,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:30:12,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:12,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:30:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:30:12,345 INFO L87 Difference]: Start difference. First operand 239 states and 270 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:15,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:15,374 INFO L93 Difference]: Finished difference Result 243 states and 274 transitions. [2024-11-13 15:30:15,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:30:15,376 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 15:30:15,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:15,377 INFO L225 Difference]: With dead ends: 243 [2024-11-13 15:30:15,377 INFO L226 Difference]: Without dead ends: 243 [2024-11-13 15:30:15,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:30:15,378 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 27 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:15,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 940 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 15:30:15,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-13 15:30:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-11-13 15:30:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 150 states have (on average 1.8) internal successors, (270), 239 states have internal predecessors, (270), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 274 transitions. [2024-11-13 15:30:15,396 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 274 transitions. Word has length 9 [2024-11-13 15:30:15,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:15,396 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 274 transitions. [2024-11-13 15:30:15,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:15,397 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 274 transitions. [2024-11-13 15:30:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 15:30:15,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:15,397 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:15,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:30:15,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:15,598 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:15,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash 303836291, now seen corresponding path program 1 times [2024-11-13 15:30:15,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:15,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27334116] [2024-11-13 15:30:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:15,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:15,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:15,601 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:15,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:30:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:16,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:30:16,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:16,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:30:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:30:16,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:30:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:30:17,402 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:17,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27334116] [2024-11-13 15:30:17,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27334116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:30:17,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:30:17,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-13 15:30:17,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266019580] [2024-11-13 15:30:17,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:30:17,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:30:17,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:17,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:30:17,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:30:17,404 INFO L87 Difference]: Start difference. First operand 243 states and 274 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:20,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:20,193 INFO L93 Difference]: Finished difference Result 258 states and 289 transitions. [2024-11-13 15:30:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:30:20,195 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-13 15:30:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:20,196 INFO L225 Difference]: With dead ends: 258 [2024-11-13 15:30:20,196 INFO L226 Difference]: Without dead ends: 258 [2024-11-13 15:30:20,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:30:20,197 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 37 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:20,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1368 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-13 15:30:20,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-13 15:30:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2024-11-13 15:30:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 165 states have (on average 1.7272727272727273) internal successors, (285), 254 states have internal predecessors, (285), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 289 transitions. [2024-11-13 15:30:20,207 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 289 transitions. Word has length 16 [2024-11-13 15:30:20,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:20,207 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 289 transitions. [2024-11-13 15:30:20,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 289 transitions. [2024-11-13 15:30:20,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 15:30:20,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:20,208 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:20,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:30:20,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:20,409 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:20,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:20,409 INFO L85 PathProgramCache]: Analyzing trace with hash 754219056, now seen corresponding path program 2 times [2024-11-13 15:30:20,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:20,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708024828] [2024-11-13 15:30:20,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:30:20,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:20,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:20,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:20,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:30:21,185 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:30:21,185 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:30:21,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:30:21,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:21,327 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 15:30:21,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 15:30:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 15:30:21,565 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:21,565 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:21,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708024828] [2024-11-13 15:30:21,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708024828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:21,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:21,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 15:30:21,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867477869] [2024-11-13 15:30:21,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:21,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:21,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:21,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:21,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:21,566 INFO L87 Difference]: Start difference. First operand 258 states and 289 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:21,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:21,954 INFO L93 Difference]: Finished difference Result 274 states and 306 transitions. [2024-11-13 15:30:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:21,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-13 15:30:21,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:21,956 INFO L225 Difference]: With dead ends: 274 [2024-11-13 15:30:21,956 INFO L226 Difference]: Without dead ends: 274 [2024-11-13 15:30:21,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:21,957 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 239 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:21,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 200 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:30:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-13 15:30:21,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2024-11-13 15:30:21,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 165 states have (on average 1.7212121212121212) internal successors, (284), 253 states have internal predecessors, (284), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:21,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 288 transitions. [2024-11-13 15:30:21,966 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 288 transitions. Word has length 31 [2024-11-13 15:30:21,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:21,967 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 288 transitions. [2024-11-13 15:30:21,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:21,967 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 288 transitions. [2024-11-13 15:30:21,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 15:30:21,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:21,968 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:21,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:30:22,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:22,168 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:22,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:22,169 INFO L85 PathProgramCache]: Analyzing trace with hash 754219057, now seen corresponding path program 1 times [2024-11-13 15:30:22,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:22,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090069414] [2024-11-13 15:30:22,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:22,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:22,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:22,171 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:22,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:30:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:23,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:30:23,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:23,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:30:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:30:23,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:30:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:30:26,358 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090069414] [2024-11-13 15:30:26,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090069414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:30:26,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:30:26,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-13 15:30:26,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554705506] [2024-11-13 15:30:26,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:30:26,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 15:30:26,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:26,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 15:30:26,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:30:26,360 INFO L87 Difference]: Start difference. First operand 257 states and 288 transitions. Second operand has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:35,974 INFO L93 Difference]: Finished difference Result 287 states and 319 transitions. [2024-11-13 15:30:35,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:30:35,975 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 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 31 [2024-11-13 15:30:35,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:35,977 INFO L225 Difference]: With dead ends: 287 [2024-11-13 15:30:35,977 INFO L226 Difference]: Without dead ends: 287 [2024-11-13 15:30:35,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=354, Invalid=836, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:30:35,979 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 64 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:35,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 2721 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-13 15:30:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-13 15:30:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-13 15:30:35,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 195 states have (on average 1.6153846153846154) internal successors, (315), 283 states have internal predecessors, (315), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 319 transitions. [2024-11-13 15:30:35,989 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 319 transitions. Word has length 31 [2024-11-13 15:30:35,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:35,990 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 319 transitions. [2024-11-13 15:30:35,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:35,990 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 319 transitions. [2024-11-13 15:30:35,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 15:30:35,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:35,992 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:36,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 15:30:36,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:36,192 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:36,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:36,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1212436655, now seen corresponding path program 2 times [2024-11-13 15:30:36,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:36,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492637482] [2024-11-13 15:30:36,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:30:36,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:36,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:36,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:36,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:30:37,123 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:30:37,123 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:30:37,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:30:37,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:37,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:30:37,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:30:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:30:37,682 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:37,683 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:37,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492637482] [2024-11-13 15:30:37,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492637482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:37,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:37,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:30:37,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161848160] [2024-11-13 15:30:37,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:37,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:30:37,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:37,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:30:37,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:37,684 INFO L87 Difference]: Start difference. First operand 287 states and 319 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:38,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:38,514 INFO L93 Difference]: Finished difference Result 303 states and 336 transitions. [2024-11-13 15:30:38,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:30:38,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-13 15:30:38,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:38,516 INFO L225 Difference]: With dead ends: 303 [2024-11-13 15:30:38,516 INFO L226 Difference]: Without dead ends: 303 [2024-11-13 15:30:38,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:38,517 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 512 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:38,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 155 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 15:30:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-13 15:30:38,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 286. [2024-11-13 15:30:38,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 195 states have (on average 1.6102564102564103) internal successors, (314), 282 states have internal predecessors, (314), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 318 transitions. [2024-11-13 15:30:38,527 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 318 transitions. Word has length 37 [2024-11-13 15:30:38,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:38,528 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 318 transitions. [2024-11-13 15:30:38,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:38,528 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 318 transitions. [2024-11-13 15:30:38,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 15:30:38,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:38,529 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:38,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:30:38,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:38,730 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:38,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:38,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1720563734, now seen corresponding path program 1 times [2024-11-13 15:30:38,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:38,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539588506] [2024-11-13 15:30:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:38,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:38,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:38,733 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:38,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:30:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:39,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:30:39,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:39,819 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-13 15:30:39,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2024-11-13 15:30:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:30:39,871 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:39,872 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539588506] [2024-11-13 15:30:39,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539588506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:39,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:39,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:30:39,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335347879] [2024-11-13 15:30:39,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:39,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:39,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:39,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:39,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:39,874 INFO L87 Difference]: Start difference. First operand 286 states and 318 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:30:40,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:40,799 INFO L93 Difference]: Finished difference Result 298 states and 331 transitions. [2024-11-13 15:30:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:40,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-13 15:30:40,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:40,801 INFO L225 Difference]: With dead ends: 298 [2024-11-13 15:30:40,801 INFO L226 Difference]: Without dead ends: 298 [2024-11-13 15:30:40,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:40,802 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 219 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:40,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 208 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 15:30:40,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-13 15:30:40,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 281. [2024-11-13 15:30:40,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 195 states have (on average 1.5846153846153845) internal successors, (309), 277 states have internal predecessors, (309), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 313 transitions. [2024-11-13 15:30:40,810 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 313 transitions. Word has length 45 [2024-11-13 15:30:40,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:40,812 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 313 transitions. [2024-11-13 15:30:40,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:30:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 313 transitions. [2024-11-13 15:30:40,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 15:30:40,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:40,813 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:40,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:30:41,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:41,014 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:41,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:41,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1720563733, now seen corresponding path program 1 times [2024-11-13 15:30:41,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:41,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673970146] [2024-11-13 15:30:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:41,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:41,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:41,017 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:41,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:30:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:42,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:30:42,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:42,139 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-13 15:30:42,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2024-11-13 15:30:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:30:42,225 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:42,226 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:42,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673970146] [2024-11-13 15:30:42,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673970146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:42,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:42,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:30:42,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195243415] [2024-11-13 15:30:42,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:42,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:30:42,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:42,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:30:42,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:30:42,227 INFO L87 Difference]: Start difference. First operand 281 states and 313 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:30:44,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:44,262 INFO L93 Difference]: Finished difference Result 442 states and 504 transitions. [2024-11-13 15:30:44,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:30:44,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-13 15:30:44,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:44,265 INFO L225 Difference]: With dead ends: 442 [2024-11-13 15:30:44,265 INFO L226 Difference]: Without dead ends: 442 [2024-11-13 15:30:44,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:30:44,266 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 581 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:44,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 790 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 15:30:44,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-13 15:30:44,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 280. [2024-11-13 15:30:44,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 195 states have (on average 1.5794871794871794) internal successors, (308), 276 states have internal predecessors, (308), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 312 transitions. [2024-11-13 15:30:44,275 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 312 transitions. Word has length 45 [2024-11-13 15:30:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:44,276 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 312 transitions. [2024-11-13 15:30:44,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:30:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 312 transitions. [2024-11-13 15:30:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 15:30:44,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:44,277 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:44,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:30:44,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:44,478 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:44,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1174478942, now seen corresponding path program 1 times [2024-11-13 15:30:44,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:44,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686978666] [2024-11-13 15:30:44,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:44,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:44,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:44,481 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:44,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:30:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:45,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:30:45,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:45,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:30:45,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-13 15:30:45,799 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:30:45,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:30:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:30:45,956 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:45,957 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:45,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686978666] [2024-11-13 15:30:45,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686978666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:45,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:45,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:30:45,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311304569] [2024-11-13 15:30:45,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:45,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:30:45,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:45,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:30:45,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:30:45,958 INFO L87 Difference]: Start difference. First operand 280 states and 312 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:30:49,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:49,287 INFO L93 Difference]: Finished difference Result 310 states and 345 transitions. [2024-11-13 15:30:49,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:30:49,288 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2024-11-13 15:30:49,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:49,290 INFO L225 Difference]: With dead ends: 310 [2024-11-13 15:30:49,290 INFO L226 Difference]: Without dead ends: 310 [2024-11-13 15:30:49,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:30:49,291 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 276 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:49,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 668 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-13 15:30:49,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-13 15:30:49,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 294. [2024-11-13 15:30:49,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 209 states have (on average 1.5741626794258374) internal successors, (329), 290 states have internal predecessors, (329), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 333 transitions. [2024-11-13 15:30:49,299 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 333 transitions. Word has length 48 [2024-11-13 15:30:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:49,299 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 333 transitions. [2024-11-13 15:30:49,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:30:49,300 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 333 transitions. [2024-11-13 15:30:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 15:30:49,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:49,301 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:49,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:30:49,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:49,501 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:49,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2098575816, now seen corresponding path program 1 times [2024-11-13 15:30:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:49,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178570231] [2024-11-13 15:30:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:49,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:49,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:49,506 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:49,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:30:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:50,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:30:50,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:50,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:30:50,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:30:50,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-11-13 15:30:50,513 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-13 15:30:50,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-13 15:30:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:30:50,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:50,540 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:50,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178570231] [2024-11-13 15:30:50,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178570231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:50,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:50,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:30:50,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570157114] [2024-11-13 15:30:50,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:50,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:50,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:50,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:50,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:50,541 INFO L87 Difference]: Start difference. First operand 294 states and 333 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:30:50,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:50,973 INFO L93 Difference]: Finished difference Result 300 states and 341 transitions. [2024-11-13 15:30:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:50,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-13 15:30:50,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:50,976 INFO L225 Difference]: With dead ends: 300 [2024-11-13 15:30:50,976 INFO L226 Difference]: Without dead ends: 300 [2024-11-13 15:30:50,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:50,977 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 212 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:50,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 206 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:30:50,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-13 15:30:50,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2024-11-13 15:30:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 215 states have (on average 1.5674418604651164) internal successors, (337), 295 states have internal predecessors, (337), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 341 transitions. [2024-11-13 15:30:50,985 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 341 transitions. Word has length 51 [2024-11-13 15:30:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:50,985 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 341 transitions. [2024-11-13 15:30:50,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:30:50,986 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 341 transitions. [2024-11-13 15:30:50,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 15:30:50,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:50,986 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:51,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 15:30:51,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:51,187 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:51,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:51,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2098575815, now seen corresponding path program 1 times [2024-11-13 15:30:51,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:51,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462237854] [2024-11-13 15:30:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:51,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:51,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:51,190 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:51,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:30:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:52,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 15:30:52,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:52,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2024-11-13 15:30:52,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:30:52,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2024-11-13 15:30:52,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:30:52,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-11-13 15:30:52,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:30:52,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-13 15:30:52,536 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:30:52,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:30:52,710 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:30:52,710 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:52,710 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:52,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462237854] [2024-11-13 15:30:52,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462237854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:52,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:52,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:30:52,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43054388] [2024-11-13 15:30:52,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:52,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:30:52,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:52,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:30:52,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:30:52,712 INFO L87 Difference]: Start difference. First operand 299 states and 341 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:30:55,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:55,317 INFO L93 Difference]: Finished difference Result 310 states and 347 transitions. [2024-11-13 15:30:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:30:55,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-13 15:30:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:55,320 INFO L225 Difference]: With dead ends: 310 [2024-11-13 15:30:55,320 INFO L226 Difference]: Without dead ends: 310 [2024-11-13 15:30:55,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:30:55,321 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 489 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:55,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 556 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-13 15:30:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-13 15:30:55,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 299. [2024-11-13 15:30:55,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 215 states have (on average 1.5627906976744186) internal successors, (336), 295 states have internal predecessors, (336), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 340 transitions. [2024-11-13 15:30:55,329 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 340 transitions. Word has length 51 [2024-11-13 15:30:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:55,329 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 340 transitions. [2024-11-13 15:30:55,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:30:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 340 transitions. [2024-11-13 15:30:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 15:30:55,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:55,330 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:55,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:30:55,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:55,531 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:55,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:55,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1128145048, now seen corresponding path program 1 times [2024-11-13 15:30:55,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:55,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008810345] [2024-11-13 15:30:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:55,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:55,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:55,537 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:55,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:30:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:56,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:30:56,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:56,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:30:56,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-11-13 15:30:56,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2024-11-13 15:30:56,504 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:30:56,504 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:56,504 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:56,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008810345] [2024-11-13 15:30:56,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008810345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:56,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:56,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:30:56,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592936488] [2024-11-13 15:30:56,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:56,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:30:56,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:56,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:30:56,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:30:56,506 INFO L87 Difference]: Start difference. First operand 299 states and 340 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:30:57,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:57,740 INFO L93 Difference]: Finished difference Result 298 states and 338 transitions. [2024-11-13 15:30:57,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:30:57,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-11-13 15:30:57,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:57,742 INFO L225 Difference]: With dead ends: 298 [2024-11-13 15:30:57,742 INFO L226 Difference]: Without dead ends: 298 [2024-11-13 15:30:57,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:30:57,742 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 13 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:57,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 725 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 15:30:57,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-13 15:30:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2024-11-13 15:30:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 215 states have (on average 1.5534883720930233) internal successors, (334), 294 states have internal predecessors, (334), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:30:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 338 transitions. [2024-11-13 15:30:57,749 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 338 transitions. Word has length 54 [2024-11-13 15:30:57,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:57,750 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 338 transitions. [2024-11-13 15:30:57,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:30:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 338 transitions. [2024-11-13 15:30:57,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 15:30:57,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:57,751 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:57,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-13 15:30:57,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:57,951 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:30:57,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:57,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1128145047, now seen corresponding path program 1 times [2024-11-13 15:30:57,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:57,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472264903] [2024-11-13 15:30:57,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:57,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:57,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:57,954 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:57,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:30:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:58,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:30:58,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:58,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:30:58,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-11-13 15:30:58,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-13 15:30:58,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2024-11-13 15:30:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:30:59,025 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:59,025 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:59,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472264903] [2024-11-13 15:30:59,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472264903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:59,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:59,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:30:59,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088950482] [2024-11-13 15:30:59,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:59,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:30:59,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:59,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:30:59,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:30:59,026 INFO L87 Difference]: Start difference. First operand 298 states and 338 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:00,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:00,504 INFO L93 Difference]: Finished difference Result 297 states and 336 transitions. [2024-11-13 15:31:00,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:31:00,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-11-13 15:31:00,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:00,505 INFO L225 Difference]: With dead ends: 297 [2024-11-13 15:31:00,506 INFO L226 Difference]: Without dead ends: 297 [2024-11-13 15:31:00,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:31:00,506 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 12 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:00,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 748 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 15:31:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-13 15:31:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2024-11-13 15:31:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 215 states have (on average 1.544186046511628) internal successors, (332), 293 states have internal predecessors, (332), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:31:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 336 transitions. [2024-11-13 15:31:00,514 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 336 transitions. Word has length 54 [2024-11-13 15:31:00,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:00,515 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 336 transitions. [2024-11-13 15:31:00,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:00,516 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 336 transitions. [2024-11-13 15:31:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 15:31:00,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:00,516 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:31:00,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:31:00,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:00,717 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:31:00,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1343798220, now seen corresponding path program 1 times [2024-11-13 15:31:00,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:00,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570456099] [2024-11-13 15:31:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:00,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:00,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:00,720 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:00,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:31:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:01,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:31:01,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:31:01,619 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:31:01,619 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:01,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570456099] [2024-11-13 15:31:01,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570456099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:31:01,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:31:01,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:31:01,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947658576] [2024-11-13 15:31:01,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:31:01,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:31:01,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:31:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:31:01,621 INFO L87 Difference]: Start difference. First operand 297 states and 336 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:01,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:01,676 INFO L93 Difference]: Finished difference Result 309 states and 351 transitions. [2024-11-13 15:31:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:31:01,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-13 15:31:01,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:01,679 INFO L225 Difference]: With dead ends: 309 [2024-11-13 15:31:01,679 INFO L226 Difference]: Without dead ends: 309 [2024-11-13 15:31:01,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:31:01,680 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 6 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:01,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 500 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:31:01,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-13 15:31:01,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2024-11-13 15:31:01,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 217 states have (on average 1.5391705069124424) internal successors, (334), 295 states have internal predecessors, (334), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:31:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 338 transitions. [2024-11-13 15:31:01,687 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 338 transitions. Word has length 59 [2024-11-13 15:31:01,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:01,687 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 338 transitions. [2024-11-13 15:31:01,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:01,687 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 338 transitions. [2024-11-13 15:31:01,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 15:31:01,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:01,688 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:31:01,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 15:31:01,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:01,889 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:31:01,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:01,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1343848190, now seen corresponding path program 1 times [2024-11-13 15:31:01,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:01,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694281934] [2024-11-13 15:31:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:01,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:01,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:01,892 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:01,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:31:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:02,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:31:02,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:02,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2024-11-13 15:31:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:31:02,850 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:31:02,850 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:02,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694281934] [2024-11-13 15:31:02,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694281934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:31:02,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:31:02,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:31:02,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147745550] [2024-11-13 15:31:02,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:31:02,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:31:02,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:02,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:31:02,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:31:02,852 INFO L87 Difference]: Start difference. First operand 299 states and 338 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:04,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:04,014 INFO L93 Difference]: Finished difference Result 298 states and 336 transitions. [2024-11-13 15:31:04,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:31:04,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-13 15:31:04,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:04,016 INFO L225 Difference]: With dead ends: 298 [2024-11-13 15:31:04,016 INFO L226 Difference]: Without dead ends: 298 [2024-11-13 15:31:04,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:31:04,017 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 6 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:04,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 790 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 15:31:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-13 15:31:04,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2024-11-13 15:31:04,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 217 states have (on average 1.5299539170506913) internal successors, (332), 294 states have internal predecessors, (332), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:31:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 336 transitions. [2024-11-13 15:31:04,025 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 336 transitions. Word has length 59 [2024-11-13 15:31:04,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:04,025 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 336 transitions. [2024-11-13 15:31:04,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:04,026 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 336 transitions. [2024-11-13 15:31:04,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 15:31:04,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:04,027 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:31:04,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 15:31:04,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:04,228 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:31:04,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:04,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1343848191, now seen corresponding path program 1 times [2024-11-13 15:31:04,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:04,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516353800] [2024-11-13 15:31:04,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:04,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:04,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:04,231 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:04,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:31:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:05,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 15:31:05,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:05,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:31:05,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-11-13 15:31:05,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-13 15:31:05,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2024-11-13 15:31:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:31:05,420 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:31:05,420 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:05,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516353800] [2024-11-13 15:31:05,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516353800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:31:05,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:31:05,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:31:05,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779086250] [2024-11-13 15:31:05,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:31:05,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:31:05,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:05,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:31:05,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:31:05,422 INFO L87 Difference]: Start difference. First operand 298 states and 336 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:07,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:07,308 INFO L93 Difference]: Finished difference Result 306 states and 345 transitions. [2024-11-13 15:31:07,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:31:07,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-13 15:31:07,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:07,310 INFO L225 Difference]: With dead ends: 306 [2024-11-13 15:31:07,310 INFO L226 Difference]: Without dead ends: 306 [2024-11-13 15:31:07,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:31:07,311 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 12 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:07,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 899 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 15:31:07,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-13 15:31:07,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2024-11-13 15:31:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 223 states have (on average 1.5201793721973094) internal successors, (339), 300 states have internal predecessors, (339), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:31:07,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 343 transitions. [2024-11-13 15:31:07,318 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 343 transitions. Word has length 59 [2024-11-13 15:31:07,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:07,318 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 343 transitions. [2024-11-13 15:31:07,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:07,318 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 343 transitions. [2024-11-13 15:31:07,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 15:31:07,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:07,319 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:31:07,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 15:31:07,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:07,520 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:31:07,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:07,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1903894010, now seen corresponding path program 1 times [2024-11-13 15:31:07,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:07,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800044856] [2024-11-13 15:31:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:07,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:07,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:07,523 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:07,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:31:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:08,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:31:08,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:31:08,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:31:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:31:08,511 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:08,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800044856] [2024-11-13 15:31:08,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800044856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:31:08,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:31:08,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-13 15:31:08,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33458649] [2024-11-13 15:31:08,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:31:08,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:31:08,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:08,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:31:08,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:31:08,513 INFO L87 Difference]: Start difference. First operand 304 states and 343 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:08,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:08,637 INFO L93 Difference]: Finished difference Result 331 states and 373 transitions. [2024-11-13 15:31:08,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:31:08,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2024-11-13 15:31:08,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:08,639 INFO L225 Difference]: With dead ends: 331 [2024-11-13 15:31:08,639 INFO L226 Difference]: Without dead ends: 331 [2024-11-13 15:31:08,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:31:08,640 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 25 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:08,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 751 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:31:08,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-13 15:31:08,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 328. [2024-11-13 15:31:08,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 247 states have (on average 1.4939271255060729) internal successors, (369), 324 states have internal predecessors, (369), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:31:08,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 373 transitions. [2024-11-13 15:31:08,647 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 373 transitions. Word has length 64 [2024-11-13 15:31:08,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:08,647 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 373 transitions. [2024-11-13 15:31:08,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:08,648 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 373 transitions. [2024-11-13 15:31:08,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 15:31:08,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:08,648 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:31:08,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 15:31:08,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:08,849 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:31:08,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:08,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1903844039, now seen corresponding path program 1 times [2024-11-13 15:31:08,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:08,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617961638] [2024-11-13 15:31:08,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:08,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:08,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:08,852 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:08,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:31:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:09,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:31:09,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:09,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:31:09,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-13 15:31:09,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-11-13 15:31:10,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2024-11-13 15:31:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:31:10,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:31:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:31:11,422 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:11,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617961638] [2024-11-13 15:31:11,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617961638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:31:11,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:31:11,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-13 15:31:11,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874610157] [2024-11-13 15:31:11,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:31:11,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:31:11,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:11,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:31:11,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:31:11,423 INFO L87 Difference]: Start difference. First operand 328 states and 373 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:17,491 INFO L93 Difference]: Finished difference Result 327 states and 367 transitions. [2024-11-13 15:31:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:31:17,492 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2024-11-13 15:31:17,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:17,493 INFO L225 Difference]: With dead ends: 327 [2024-11-13 15:31:17,493 INFO L226 Difference]: Without dead ends: 327 [2024-11-13 15:31:17,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:31:17,494 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 22 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:17,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1547 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-13 15:31:17,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-13 15:31:17,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2024-11-13 15:31:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 247 states have (on average 1.4696356275303644) internal successors, (363), 323 states have internal predecessors, (363), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:31:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 367 transitions. [2024-11-13 15:31:17,500 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 367 transitions. Word has length 64 [2024-11-13 15:31:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:17,501 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 367 transitions. [2024-11-13 15:31:17,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 367 transitions. [2024-11-13 15:31:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 15:31:17,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:17,502 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:31:17,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:31:17,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:17,702 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:31:17,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:17,702 INFO L85 PathProgramCache]: Analyzing trace with hash -494005172, now seen corresponding path program 2 times [2024-11-13 15:31:17,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:17,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082496492] [2024-11-13 15:31:17,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:31:17,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:17,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:17,705 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:17,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:31:20,107 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:31:20,107 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:31:20,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 15:31:20,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:20,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:31:20,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-11-13 15:31:20,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-13 15:31:21,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2024-11-13 15:31:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:31:21,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:31:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 15:31:24,382 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:24,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082496492] [2024-11-13 15:31:24,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082496492] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:31:24,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:31:24,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2024-11-13 15:31:24,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489653945] [2024-11-13 15:31:24,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:31:24,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:31:24,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:24,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:31:24,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-11-13 15:31:24,384 INFO L87 Difference]: Start difference. First operand 327 states and 367 transitions. Second operand has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 21 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:33,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:33,370 INFO L93 Difference]: Finished difference Result 393 states and 433 transitions. [2024-11-13 15:31:33,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 15:31:33,372 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 21 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2024-11-13 15:31:33,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:33,373 INFO L225 Difference]: With dead ends: 393 [2024-11-13 15:31:33,373 INFO L226 Difference]: Without dead ends: 393 [2024-11-13 15:31:33,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=335, Invalid=657, Unknown=0, NotChecked=0, Total=992 [2024-11-13 15:31:33,374 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 107 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:33,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1818 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-13 15:31:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-11-13 15:31:33,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 387. [2024-11-13 15:31:33,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 307 states have (on average 1.3973941368078175) internal successors, (429), 383 states have internal predecessors, (429), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:31:33,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 433 transitions. [2024-11-13 15:31:33,383 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 433 transitions. Word has length 79 [2024-11-13 15:31:33,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:33,383 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 433 transitions. [2024-11-13 15:31:33,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 21 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:31:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 433 transitions. [2024-11-13 15:31:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-13 15:31:33,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:33,385 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:31:33,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 15:31:33,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:33,585 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-13 15:31:33,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:33,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1817591540, now seen corresponding path program 3 times [2024-11-13 15:31:33,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:33,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523109143] [2024-11-13 15:31:33,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:31:33,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:33,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:33,588 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:33,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6538d476-a89b-4346-8701-448731b305a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 15:31:36,005 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 15:31:36,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:31:36,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 15:31:36,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:36,156 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-13 15:31:36,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2024-11-13 15:31:36,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:31:36,611 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-11-13 15:31:36,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 31 [2024-11-13 15:31:36,645 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:31:36,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:31:39,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:31:39,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-13 15:31:39,075 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:31:39,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:31:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:31:39,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:31:43,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:31:43,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 82 [2024-11-13 15:31:45,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:31:45,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 106 [2024-11-13 15:31:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 15:31:51,444 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:51,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523109143] [2024-11-13 15:31:51,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523109143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:31:51,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:31:51,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2024-11-13 15:31:51,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662126518] [2024-11-13 15:31:51,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:31:51,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:31:51,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:51,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:31:51,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=268, Unknown=1, NotChecked=0, Total=342 [2024-11-13 15:31:51,446 INFO L87 Difference]: Start difference. First operand 387 states and 433 transitions. Second operand has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)