./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU --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 6ffcce1e08250851b38bd13c8d242ad56bc28e26b9cf1f4a650085c48ced284a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:01:45,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:01:45,968 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-10-31 22:01:45,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:01:45,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:01:46,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:01:46,027 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:01:46,027 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:01:46,028 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:01:46,029 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:01:46,031 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:01:46,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:01:46,032 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:01:46,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:01:46,033 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:01:46,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:01:46,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:01:46,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:01:46,037 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:01:46,038 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:01:46,038 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:01:46,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:01:46,039 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:01:46,039 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:01:46,039 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:01:46,039 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:01:46,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:01:46,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:01:46,040 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:01:46,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:01:46,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:46,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:01:46,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:01:46,041 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:01:46,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:01:46,042 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:01:46,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:01:46,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:01:46,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:01:46,043 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ffcce1e08250851b38bd13c8d242ad56bc28e26b9cf1f4a650085c48ced284a [2024-10-31 22:01:46,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:01:46,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:01:46,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:01:46,422 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:01:46,422 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:01:46,424 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/busybox-1.22.0/basename-1.i Unable to find full path for "g++" [2024-10-31 22:01:48,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:01:48,714 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:01:48,714 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/sv-benchmarks/c/busybox-1.22.0/basename-1.i [2024-10-31 22:01:48,747 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/data/5fd00895c/b9d41c763c784c4fbde4a323ab27a583/FLAG6115f7858 [2024-10-31 22:01:48,777 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/data/5fd00895c/b9d41c763c784c4fbde4a323ab27a583 [2024-10-31 22:01:48,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:01:48,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:01:48,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:48,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:01:48,799 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:01:48,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:48" (1/1) ... [2024-10-31 22:01:48,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65545686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:48, skipping insertion in model container [2024-10-31 22:01:48,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:48" (1/1) ... [2024-10-31 22:01:48,871 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:01:49,870 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:01:49,931 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:01:49,948 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:01:49,964 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:01:49,974 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:01:49,987 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:01:49,990 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:01:49,992 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:01:49,997 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:01:50,001 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:01:50,026 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:01:50,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:50,079 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:01:50,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:50,367 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:01:50,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50 WrapperNode [2024-10-31 22:01:50,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:50,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:50,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:01:50,370 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:01:50,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50" (1/1) ... [2024-10-31 22:01:50,426 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50" (1/1) ... [2024-10-31 22:01:50,523 INFO L138 Inliner]: procedures = 350, calls = 476, calls flagged for inlining = 13, calls inlined = 11, statements flattened = 743 [2024-10-31 22:01:50,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:50,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:01:50,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:01:50,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:01:50,537 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50" (1/1) ... [2024-10-31 22:01:50,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50" (1/1) ... [2024-10-31 22:01:50,547 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50" (1/1) ... [2024-10-31 22:01:50,611 INFO L175 MemorySlicer]: Split 410 memory accesses to 14 slices as follows [2, 3, 3, 3, 4, 2, 4, 4, 3, 355, 12, 2, 1, 12]. 87 percent of accesses are in the largest equivalence class. The 378 initializations are split as follows [2, 3, 3, 3, 3, 0, 3, 3, 3, 355, 0, 0, 0, 0]. The 10 writes are split as follows [0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 2, 1, 0, 5]. [2024-10-31 22:01:50,611 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50" (1/1) ... [2024-10-31 22:01:50,611 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50" (1/1) ... [2024-10-31 22:01:50,677 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50" (1/1) ... [2024-10-31 22:01:50,686 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50" (1/1) ... [2024-10-31 22:01:50,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50" (1/1) ... [2024-10-31 22:01:50,712 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50" (1/1) ... [2024-10-31 22:01:50,733 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:01:50,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:01:50,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:01:50,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:01:50,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50" (1/1) ... [2024-10-31 22:01:50,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:50,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:50,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:01:50,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:01:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-31 22:01:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-31 22:01:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 22:01:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 22:01:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-31 22:01:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-31 22:01:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-31 22:01:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-31 22:01:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-10-31 22:01:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-10-31 22:01:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-10-31 22:01:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-10-31 22:01:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-10-31 22:01:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-10-31 22:01:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-10-31 22:01:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-10-31 22:01:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:01:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:01:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:01:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:01:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:01:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-31 22:01:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-31 22:01:50,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-31 22:01:50,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-31 22:01:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-31 22:01:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-10-31 22:01:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-10-31 22:01:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-10-31 22:01:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-10-31 22:01:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-10-31 22:01:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:01:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:01:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:01:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:01:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-31 22:01:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-31 22:01:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-31 22:01:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-31 22:01:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-31 22:01:50,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-10-31 22:01:50,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-10-31 22:01:50,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-10-31 22:01:50,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-10-31 22:01:50,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-10-31 22:01:50,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:01:50,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:01:50,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 22:01:50,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 22:01:50,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-31 22:01:50,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-31 22:01:50,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-31 22:01:50,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-31 22:01:50,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-10-31 22:01:50,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-10-31 22:01:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-10-31 22:01:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-10-31 22:01:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-10-31 22:01:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-10-31 22:01:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-10-31 22:01:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-10-31 22:01:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:01:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:01:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:01:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:01:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-31 22:01:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-31 22:01:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-31 22:01:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-31 22:01:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-31 22:01:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-31 22:01:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-31 22:01:50,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-31 22:01:50,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-31 22:01:50,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-31 22:01:50,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:01:50,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:01:51,256 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:01:51,258 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:01:52,348 INFO L? ?]: Removed 261 outVars from TransFormulas that were not future-live. [2024-10-31 22:01:52,349 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:01:52,380 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:01:52,382 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-10-31 22:01:52,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:52 BoogieIcfgContainer [2024-10-31 22:01:52,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:01:52,386 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:01:52,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:01:52,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:01:52,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:01:48" (1/3) ... [2024-10-31 22:01:52,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a6bf14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:52, skipping insertion in model container [2024-10-31 22:01:52,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:50" (2/3) ... [2024-10-31 22:01:52,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a6bf14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:52, skipping insertion in model container [2024-10-31 22:01:52,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:52" (3/3) ... [2024-10-31 22:01:52,396 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-1.i [2024-10-31 22:01:52,417 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:01:52,417 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 94 error locations. [2024-10-31 22:01:52,485 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:01:52,494 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;@274d107a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:01:52,494 INFO L334 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2024-10-31 22:01:52,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 150 states have (on average 1.9133333333333333) internal successors, (287), 244 states have internal predecessors, (287), 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) [2024-10-31 22:01:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-31 22:01:52,510 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:52,511 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-31 22:01:52,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:01:52,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:52,519 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2024-10-31 22:01:52,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:52,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341738137] [2024-10-31 22:01:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:52,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:53,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:53,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341738137] [2024-10-31 22:01:53,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341738137] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:53,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:53,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:53,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168586806] [2024-10-31 22:01:53,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:53,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:53,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:53,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:53,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:53,278 INFO L87 Difference]: Start difference. First operand has 248 states, 150 states have (on average 1.9133333333333333) internal successors, (287), 244 states have internal predecessors, (287), 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) [2024-10-31 22:01:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:53,589 INFO L93 Difference]: Finished difference Result 258 states and 290 transitions. [2024-10-31 22:01:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:53,592 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 [2024-10-31 22:01:53,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:53,603 INFO L225 Difference]: With dead ends: 258 [2024-10-31 22:01:53,603 INFO L226 Difference]: Without dead ends: 256 [2024-10-31 22:01:53,605 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 [2024-10-31 22:01:53,612 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 240 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:53,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 209 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:01:53,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-10-31 22:01:53,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 239. [2024-10-31 22:01:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 146 states have (on average 1.821917808219178) 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) [2024-10-31 22:01:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 270 transitions. [2024-10-31 22:01:53,682 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 270 transitions. Word has length 3 [2024-10-31 22:01:53,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:53,683 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 270 transitions. [2024-10-31 22:01:53,683 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) [2024-10-31 22:01:53,683 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 270 transitions. [2024-10-31 22:01:53,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-31 22:01:53,684 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:53,684 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-31 22:01:53,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:01:53,685 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:01:53,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:53,685 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2024-10-31 22:01:53,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:53,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026805520] [2024-10-31 22:01:53,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:53,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:54,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:54,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026805520] [2024-10-31 22:01:54,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026805520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:54,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:54,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:54,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260198038] [2024-10-31 22:01:54,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:54,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:54,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:54,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:54,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:54,084 INFO L87 Difference]: Start difference. First operand 239 states and 270 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) [2024-10-31 22:01:54,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:54,295 INFO L93 Difference]: Finished difference Result 238 states and 269 transitions. [2024-10-31 22:01:54,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:54,296 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 [2024-10-31 22:01:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:54,297 INFO L225 Difference]: With dead ends: 238 [2024-10-31 22:01:54,298 INFO L226 Difference]: Without dead ends: 238 [2024-10-31 22:01:54,298 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 [2024-10-31 22:01:54,299 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 7 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:54,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 438 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:01:54,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-31 22:01:54,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-31 22:01:54,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 146 states have (on average 1.8150684931506849) 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) [2024-10-31 22:01:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 269 transitions. [2024-10-31 22:01:54,312 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 269 transitions. Word has length 3 [2024-10-31 22:01:54,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:54,312 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 269 transitions. [2024-10-31 22:01:54,313 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) [2024-10-31 22:01:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 269 transitions. [2024-10-31 22:01:54,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 22:01:54,313 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:54,314 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:01:54,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:01:54,314 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:01:54,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:54,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2024-10-31 22:01:54,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:54,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448576505] [2024-10-31 22:01:54,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:54,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:54,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:54,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448576505] [2024-10-31 22:01:54,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448576505] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:54,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:54,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:01:54,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828460387] [2024-10-31 22:01:54,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:54,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:54,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:54,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:54,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:54,703 INFO L87 Difference]: Start difference. First operand 238 states and 269 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) [2024-10-31 22:01:54,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:54,994 INFO L93 Difference]: Finished difference Result 241 states and 272 transitions. [2024-10-31 22:01:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:54,994 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 [2024-10-31 22:01:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:54,996 INFO L225 Difference]: With dead ends: 241 [2024-10-31 22:01:54,996 INFO L226 Difference]: Without dead ends: 241 [2024-10-31 22:01:54,996 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 [2024-10-31 22:01:54,997 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 7 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:54,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 610 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:01:54,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-10-31 22:01:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2024-10-31 22:01:55,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 148 states have (on average 1.804054054054054) internal successors, (267), 236 states have internal predecessors, (267), 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) [2024-10-31 22:01:55,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 271 transitions. [2024-10-31 22:01:55,008 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 271 transitions. Word has length 6 [2024-10-31 22:01:55,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:55,008 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 271 transitions. [2024-10-31 22:01:55,008 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) [2024-10-31 22:01:55,009 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 271 transitions. [2024-10-31 22:01:55,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-31 22:01:55,009 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:55,009 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:55,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:01:55,010 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:01:55,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash 71430167, now seen corresponding path program 1 times [2024-10-31 22:01:55,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:55,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178227115] [2024-10-31 22:01:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:55,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:55,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178227115] [2024-10-31 22:01:55,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178227115] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:55,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459018734] [2024-10-31 22:01:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:55,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:55,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:55,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:55,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:01:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:55,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:01:55,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:55,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:56,082 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 [2024-10-31 22:01:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:56,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459018734] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:56,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:56,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-10-31 22:01:56,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421389225] [2024-10-31 22:01:56,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:56,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:01:56,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:56,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:01:56,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:01:56,103 INFO L87 Difference]: Start difference. First operand 240 states and 271 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) [2024-10-31 22:01:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:56,562 INFO L93 Difference]: Finished difference Result 244 states and 275 transitions. [2024-10-31 22:01:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:01:56,562 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 [2024-10-31 22:01:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:56,564 INFO L225 Difference]: With dead ends: 244 [2024-10-31 22:01:56,564 INFO L226 Difference]: Without dead ends: 244 [2024-10-31 22:01:56,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:01:56,566 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 511 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:56,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 784 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 22:01:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-10-31 22:01:56,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2024-10-31 22:01:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 153 states have (on average 1.7712418300653594) internal successors, (271), 240 states have internal predecessors, (271), 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) [2024-10-31 22:01:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 275 transitions. [2024-10-31 22:01:56,578 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 275 transitions. Word has length 9 [2024-10-31 22:01:56,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:56,578 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 275 transitions. [2024-10-31 22:01:56,579 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) [2024-10-31 22:01:56,579 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 275 transitions. [2024-10-31 22:01:56,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-31 22:01:56,580 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:56,580 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:56,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:01:56,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:56,781 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:01:56,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:56,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1803865808, now seen corresponding path program 1 times [2024-10-31 22:01:56,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:56,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428651048] [2024-10-31 22:01:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:56,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:57,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-31 22:01:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:57,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:57,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428651048] [2024-10-31 22:01:57,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428651048] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:57,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767525506] [2024-10-31 22:01:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:57,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:57,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:57,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:57,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:01:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:57,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:01:57,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:57,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:57,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767525506] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:57,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:57,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-31 22:01:57,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761974829] [2024-10-31 22:01:57,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:57,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:01:57,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:57,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:01:57,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:01:57,643 INFO L87 Difference]: Start difference. First operand 244 states and 275 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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) [2024-10-31 22:01:57,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:57,739 INFO L93 Difference]: Finished difference Result 259 states and 290 transitions. [2024-10-31 22:01:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:01:57,739 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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 22 [2024-10-31 22:01:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:57,741 INFO L225 Difference]: With dead ends: 259 [2024-10-31 22:01:57,741 INFO L226 Difference]: Without dead ends: 259 [2024-10-31 22:01:57,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:01:57,743 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 4 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:57,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1048 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:01:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-10-31 22:01:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2024-10-31 22:01:57,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 168 states have (on average 1.7023809523809523) internal successors, (286), 255 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) [2024-10-31 22:01:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 290 transitions. [2024-10-31 22:01:57,761 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 290 transitions. Word has length 22 [2024-10-31 22:01:57,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:57,761 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 290 transitions. [2024-10-31 22:01:57,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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) [2024-10-31 22:01:57,761 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 290 transitions. [2024-10-31 22:01:57,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-31 22:01:57,762 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:57,762 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:57,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:01:57,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:57,967 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:01:57,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:57,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1046446110, now seen corresponding path program 2 times [2024-10-31 22:01:57,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:57,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675809514] [2024-10-31 22:01:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:57,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:58,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:01:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:58,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:58,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675809514] [2024-10-31 22:01:58,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675809514] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:58,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965592573] [2024-10-31 22:01:58,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:01:58,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:58,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:58,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:58,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:01:58,828 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:01:58,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:01:58,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:01:58,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:58,873 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-31 22:01:58,873 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 11 [2024-10-31 22:01:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-10-31 22:01:58,908 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:01:58,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965592573] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:58,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:01:58,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2024-10-31 22:01:58,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863688199] [2024-10-31 22:01:58,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:58,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:58,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:58,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:58,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:01:58,911 INFO L87 Difference]: Start difference. First operand 259 states and 290 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-10-31 22:01:59,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:59,181 INFO L93 Difference]: Finished difference Result 271 states and 303 transitions. [2024-10-31 22:01:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:59,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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 37 [2024-10-31 22:01:59,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:59,183 INFO L225 Difference]: With dead ends: 271 [2024-10-31 22:01:59,183 INFO L226 Difference]: Without dead ends: 271 [2024-10-31 22:01:59,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:01:59,184 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 223 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:59,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 211 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:01:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-10-31 22:01:59,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 254. [2024-10-31 22:01:59,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 168 states have (on average 1.6726190476190477) internal successors, (281), 250 states have internal predecessors, (281), 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) [2024-10-31 22:01:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 285 transitions. [2024-10-31 22:01:59,192 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 285 transitions. Word has length 37 [2024-10-31 22:01:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:59,199 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 285 transitions. [2024-10-31 22:01:59,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-10-31 22:01:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 285 transitions. [2024-10-31 22:01:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-31 22:01:59,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:59,200 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:59,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:01:59,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:01:59,401 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:01:59,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:59,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1046446111, now seen corresponding path program 1 times [2024-10-31 22:01:59,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:59,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163557797] [2024-10-31 22:01:59,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:59,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:59,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:01:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:59,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:59,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163557797] [2024-10-31 22:01:59,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163557797] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:59,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558456206] [2024-10-31 22:01:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:59,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:59,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:59,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:59,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:02:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:00,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:02:00,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:00,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:02:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:00,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558456206] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:02:00,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:02:00,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-10-31 22:02:00,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459915645] [2024-10-31 22:02:00,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:02:00,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:02:00,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:00,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:02:00,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:02:00,577 INFO L87 Difference]: Start difference. First operand 254 states and 285 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 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) [2024-10-31 22:02:00,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:00,662 INFO L93 Difference]: Finished difference Result 260 states and 291 transitions. [2024-10-31 22:02:00,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:02:00,662 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 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 37 [2024-10-31 22:02:00,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:00,663 INFO L225 Difference]: With dead ends: 260 [2024-10-31 22:02:00,663 INFO L226 Difference]: Without dead ends: 260 [2024-10-31 22:02:00,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:02:00,664 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 2 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1284 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 [2024-10-31 22:02:00,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1284 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:02:00,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-10-31 22:02:00,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2024-10-31 22:02:00,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 174 states have (on average 1.6494252873563218) internal successors, (287), 256 states have internal predecessors, (287), 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) [2024-10-31 22:02:00,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 291 transitions. [2024-10-31 22:02:00,674 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 291 transitions. Word has length 37 [2024-10-31 22:02:00,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:00,674 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 291 transitions. [2024-10-31 22:02:00,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 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) [2024-10-31 22:02:00,674 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 291 transitions. [2024-10-31 22:02:00,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-31 22:02:00,677 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:00,677 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:00,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:02:00,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:02:00,882 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:02:00,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:00,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1137674529, now seen corresponding path program 2 times [2024-10-31 22:02:00,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:00,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360661401] [2024-10-31 22:02:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:00,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:01,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:02:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:02:02,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:02,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360661401] [2024-10-31 22:02:02,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360661401] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:02,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:02,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:02:02,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935115467] [2024-10-31 22:02:02,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:02,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:02:02,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:02:02,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:02:02,015 INFO L87 Difference]: Start difference. First operand 260 states and 291 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-10-31 22:02:02,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:02,450 INFO L93 Difference]: Finished difference Result 425 states and 486 transitions. [2024-10-31 22:02:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:02:02,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 43 [2024-10-31 22:02:02,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:02,452 INFO L225 Difference]: With dead ends: 425 [2024-10-31 22:02:02,452 INFO L226 Difference]: Without dead ends: 425 [2024-10-31 22:02:02,453 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 [2024-10-31 22:02:02,453 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 593 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:02,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 805 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 22:02:02,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-10-31 22:02:02,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 259. [2024-10-31 22:02:02,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 174 states have (on average 1.6436781609195403) internal successors, (286), 255 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) [2024-10-31 22:02:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 290 transitions. [2024-10-31 22:02:02,461 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 290 transitions. Word has length 43 [2024-10-31 22:02:02,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:02,462 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 290 transitions. [2024-10-31 22:02:02,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-10-31 22:02:02,462 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 290 transitions. [2024-10-31 22:02:02,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-31 22:02:02,463 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:02,463 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:02,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:02:02,464 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:02:02,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash -874983285, now seen corresponding path program 1 times [2024-10-31 22:02:02,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:02,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508949892] [2024-10-31 22:02:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:02,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:03,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:02:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:02:03,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:03,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508949892] [2024-10-31 22:02:03,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508949892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:03,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:03,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:02:03,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385796587] [2024-10-31 22:02:03,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:03,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:02:03,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:03,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:02:03,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:02:03,061 INFO L87 Difference]: Start difference. First operand 259 states and 290 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-10-31 22:02:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:03,663 INFO L93 Difference]: Finished difference Result 289 states and 324 transitions. [2024-10-31 22:02:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:02:03,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 46 [2024-10-31 22:02:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:03,665 INFO L225 Difference]: With dead ends: 289 [2024-10-31 22:02:03,665 INFO L226 Difference]: Without dead ends: 289 [2024-10-31 22:02:03,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:02:03,667 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 497 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:03,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 422 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:02:03,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-10-31 22:02:03,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 272. [2024-10-31 22:02:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 188 states have (on average 1.6329787234042554) internal successors, (307), 268 states have internal predecessors, (307), 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) [2024-10-31 22:02:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 311 transitions. [2024-10-31 22:02:03,677 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 311 transitions. Word has length 46 [2024-10-31 22:02:03,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:03,679 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 311 transitions. [2024-10-31 22:02:03,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-10-31 22:02:03,680 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 311 transitions. [2024-10-31 22:02:03,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-31 22:02:03,680 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:03,680 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] [2024-10-31 22:02:03,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:02:03,681 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:02:03,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:03,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1354678587, now seen corresponding path program 1 times [2024-10-31 22:02:03,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:03,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829859656] [2024-10-31 22:02:03,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:03,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:03,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:02:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:02:03,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:03,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829859656] [2024-10-31 22:02:03,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829859656] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:03,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:03,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:02:03,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833427728] [2024-10-31 22:02:03,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:03,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:02:03,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:03,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:02:03,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:02:03,958 INFO L87 Difference]: Start difference. First operand 272 states and 311 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-10-31 22:02:04,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:04,258 INFO L93 Difference]: Finished difference Result 306 states and 352 transitions. [2024-10-31 22:02:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:02:04,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 47 [2024-10-31 22:02:04,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:04,260 INFO L225 Difference]: With dead ends: 306 [2024-10-31 22:02:04,260 INFO L226 Difference]: Without dead ends: 306 [2024-10-31 22:02:04,261 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 [2024-10-31 22:02:04,261 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 396 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:04,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 271 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:02:04,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-10-31 22:02:04,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 265. [2024-10-31 22:02:04,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 188 states have (on average 1.5957446808510638) internal successors, (300), 261 states have internal predecessors, (300), 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) [2024-10-31 22:02:04,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 304 transitions. [2024-10-31 22:02:04,273 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 304 transitions. Word has length 47 [2024-10-31 22:02:04,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:04,273 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 304 transitions. [2024-10-31 22:02:04,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-10-31 22:02:04,274 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 304 transitions. [2024-10-31 22:02:04,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-31 22:02:04,276 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:04,276 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] [2024-10-31 22:02:04,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:02:04,277 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:02:04,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:04,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1354678586, now seen corresponding path program 1 times [2024-10-31 22:02:04,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:04,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029135527] [2024-10-31 22:02:04,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:04,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:04,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:02:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:02:04,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:04,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029135527] [2024-10-31 22:02:04,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029135527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:04,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:04,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:02:04,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128084336] [2024-10-31 22:02:04,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:04,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:02:04,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:02:04,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:02:04,772 INFO L87 Difference]: Start difference. First operand 265 states and 304 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-10-31 22:02:04,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:04,881 INFO L93 Difference]: Finished difference Result 272 states and 305 transitions. [2024-10-31 22:02:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:02:04,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 47 [2024-10-31 22:02:04,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:04,885 INFO L225 Difference]: With dead ends: 272 [2024-10-31 22:02:04,885 INFO L226 Difference]: Without dead ends: 272 [2024-10-31 22:02:04,886 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 [2024-10-31 22:02:04,886 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 259 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:04,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 934 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:02:04,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-10-31 22:02:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 265. [2024-10-31 22:02:04,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 188 states have (on average 1.5904255319148937) 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) [2024-10-31 22:02:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 303 transitions. [2024-10-31 22:02:04,897 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 303 transitions. Word has length 47 [2024-10-31 22:02:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:04,899 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 303 transitions. [2024-10-31 22:02:04,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-10-31 22:02:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 303 transitions. [2024-10-31 22:02:04,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-31 22:02:04,900 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:04,900 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] [2024-10-31 22:02:04,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:02:04,900 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:02:04,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:04,901 INFO L85 PathProgramCache]: Analyzing trace with hash -470534900, now seen corresponding path program 1 times [2024-10-31 22:02:04,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:04,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743781698] [2024-10-31 22:02:04,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:04,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:05,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:02:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:02:05,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:05,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743781698] [2024-10-31 22:02:05,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743781698] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:05,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:05,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:02:05,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005085013] [2024-10-31 22:02:05,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:05,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:05,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:05,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:05,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:02:05,367 INFO L87 Difference]: Start difference. First operand 265 states and 303 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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) [2024-10-31 22:02:05,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:05,536 INFO L93 Difference]: Finished difference Result 271 states and 311 transitions. [2024-10-31 22:02:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:05,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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 [2024-10-31 22:02:05,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:05,538 INFO L225 Difference]: With dead ends: 271 [2024-10-31 22:02:05,538 INFO L226 Difference]: Without dead ends: 271 [2024-10-31 22:02:05,539 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 [2024-10-31 22:02:05,539 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 209 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:05,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 207 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:02:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-10-31 22:02:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2024-10-31 22:02:05,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 194 states have (on average 1.5824742268041236) internal successors, (307), 266 states have internal predecessors, (307), 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) [2024-10-31 22:02:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 311 transitions. [2024-10-31 22:02:05,547 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 311 transitions. Word has length 49 [2024-10-31 22:02:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:05,547 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 311 transitions. [2024-10-31 22:02:05,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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) [2024-10-31 22:02:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 311 transitions. [2024-10-31 22:02:05,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-31 22:02:05,552 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:05,552 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] [2024-10-31 22:02:05,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:02:05,552 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:02:05,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:05,553 INFO L85 PathProgramCache]: Analyzing trace with hash -470534899, now seen corresponding path program 1 times [2024-10-31 22:02:05,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:05,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358885873] [2024-10-31 22:02:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:05,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:06,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:02:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:02:06,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:06,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358885873] [2024-10-31 22:02:06,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358885873] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:06,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:06,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:02:06,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256116507] [2024-10-31 22:02:06,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:06,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:02:06,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:06,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:02:06,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:02:06,617 INFO L87 Difference]: Start difference. First operand 270 states and 311 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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) [2024-10-31 22:02:07,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:07,281 INFO L93 Difference]: Finished difference Result 282 states and 317 transitions. [2024-10-31 22:02:07,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:02:07,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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 [2024-10-31 22:02:07,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:07,283 INFO L225 Difference]: With dead ends: 282 [2024-10-31 22:02:07,283 INFO L226 Difference]: Without dead ends: 282 [2024-10-31 22:02:07,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:02:07,284 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 225 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:07,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 562 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:02:07,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-10-31 22:02:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 270. [2024-10-31 22:02:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 194 states have (on average 1.5721649484536082) internal successors, (305), 266 states have internal predecessors, (305), 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) [2024-10-31 22:02:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 309 transitions. [2024-10-31 22:02:07,291 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 309 transitions. Word has length 49 [2024-10-31 22:02:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:07,292 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 309 transitions. [2024-10-31 22:02:07,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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) [2024-10-31 22:02:07,292 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 309 transitions. [2024-10-31 22:02:07,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-31 22:02:07,293 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:07,293 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] [2024-10-31 22:02:07,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:02:07,293 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:02:07,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:07,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1068074097, now seen corresponding path program 1 times [2024-10-31 22:02:07,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:07,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941791608] [2024-10-31 22:02:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:07,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:07,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:02:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:02:07,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:07,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941791608] [2024-10-31 22:02:07,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941791608] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:07,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:07,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:02:07,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104010397] [2024-10-31 22:02:07,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:07,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:02:07,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:07,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:02:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:02:07,769 INFO L87 Difference]: Start difference. First operand 270 states and 309 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-10-31 22:02:08,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:08,104 INFO L93 Difference]: Finished difference Result 269 states and 307 transitions. [2024-10-31 22:02:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:02:08,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 52 [2024-10-31 22:02:08,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:08,106 INFO L225 Difference]: With dead ends: 269 [2024-10-31 22:02:08,107 INFO L226 Difference]: Without dead ends: 269 [2024-10-31 22:02:08,107 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 [2024-10-31 22:02:08,108 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 14 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:08,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 729 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:02:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-10-31 22:02:08,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-10-31 22:02:08,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 194 states have (on average 1.5618556701030928) internal successors, (303), 265 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) [2024-10-31 22:02:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 307 transitions. [2024-10-31 22:02:08,116 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 307 transitions. Word has length 52 [2024-10-31 22:02:08,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:08,116 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 307 transitions. [2024-10-31 22:02:08,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-10-31 22:02:08,117 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 307 transitions. [2024-10-31 22:02:08,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-31 22:02:08,118 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:08,118 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] [2024-10-31 22:02:08,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:02:08,119 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:02:08,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:08,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1068074098, now seen corresponding path program 1 times [2024-10-31 22:02:08,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:08,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385511851] [2024-10-31 22:02:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:08,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:08,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:02:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:02:08,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:08,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385511851] [2024-10-31 22:02:08,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385511851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:08,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:08,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:02:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230171700] [2024-10-31 22:02:08,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:08,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:02:08,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:08,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:02:08,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:02:08,834 INFO L87 Difference]: Start difference. First operand 269 states and 307 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-10-31 22:02:09,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:09,148 INFO L93 Difference]: Finished difference Result 268 states and 305 transitions. [2024-10-31 22:02:09,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:02:09,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 52 [2024-10-31 22:02:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:09,150 INFO L225 Difference]: With dead ends: 268 [2024-10-31 22:02:09,150 INFO L226 Difference]: Without dead ends: 268 [2024-10-31 22:02:09,152 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 [2024-10-31 22:02:09,153 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 13 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:09,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 731 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:02:09,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-10-31 22:02:09,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2024-10-31 22:02:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 194 states have (on average 1.5515463917525774) internal successors, (301), 264 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) [2024-10-31 22:02:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 305 transitions. [2024-10-31 22:02:09,163 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 305 transitions. Word has length 52 [2024-10-31 22:02:09,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:09,163 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 305 transitions. [2024-10-31 22:02:09,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-10-31 22:02:09,163 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 305 transitions. [2024-10-31 22:02:09,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-31 22:02:09,164 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:09,164 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] [2024-10-31 22:02:09,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 22:02:09,164 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:02:09,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:09,166 INFO L85 PathProgramCache]: Analyzing trace with hash 610330706, now seen corresponding path program 1 times [2024-10-31 22:02:09,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:09,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399022426] [2024-10-31 22:02:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:09,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:09,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:02:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:02:09,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:09,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399022426] [2024-10-31 22:02:09,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399022426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:09,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:09,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:02:09,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533878604] [2024-10-31 22:02:09,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:09,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:02:09,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:09,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:02:09,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:02:09,469 INFO L87 Difference]: Start difference. First operand 268 states and 305 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2024-10-31 22:02:09,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:09,733 INFO L93 Difference]: Finished difference Result 267 states and 303 transitions. [2024-10-31 22:02:09,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:02:09,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 57 [2024-10-31 22:02:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:09,735 INFO L225 Difference]: With dead ends: 267 [2024-10-31 22:02:09,735 INFO L226 Difference]: Without dead ends: 267 [2024-10-31 22:02:09,735 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 [2024-10-31 22:02:09,736 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 7 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:09,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 787 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:02:09,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-10-31 22:02:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2024-10-31 22:02:09,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 194 states have (on average 1.541237113402062) internal successors, (299), 263 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) [2024-10-31 22:02:09,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 303 transitions. [2024-10-31 22:02:09,743 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 303 transitions. Word has length 57 [2024-10-31 22:02:09,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:09,744 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 303 transitions. [2024-10-31 22:02:09,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2024-10-31 22:02:09,744 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 303 transitions. [2024-10-31 22:02:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-31 22:02:09,747 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:09,747 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] [2024-10-31 22:02:09,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 22:02:09,748 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:02:09,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash 610330707, now seen corresponding path program 1 times [2024-10-31 22:02:09,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:09,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087677589] [2024-10-31 22:02:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:09,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:10,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:02:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:02:10,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:10,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087677589] [2024-10-31 22:02:10,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087677589] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:10,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:10,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:02:10,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770124343] [2024-10-31 22:02:10,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:10,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:02:10,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:10,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:02:10,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:02:10,732 INFO L87 Difference]: Start difference. First operand 267 states and 303 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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) [2024-10-31 22:02:11,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:11,213 INFO L93 Difference]: Finished difference Result 277 states and 314 transitions. [2024-10-31 22:02:11,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:02:11,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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 57 [2024-10-31 22:02:11,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:11,215 INFO L225 Difference]: With dead ends: 277 [2024-10-31 22:02:11,215 INFO L226 Difference]: Without dead ends: 277 [2024-10-31 22:02:11,215 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 [2024-10-31 22:02:11,216 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 16 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:11,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 882 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 22:02:11,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-10-31 22:02:11,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2024-10-31 22:02:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 202 states have (on average 1.5247524752475248) internal successors, (308), 271 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) [2024-10-31 22:02:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 312 transitions. [2024-10-31 22:02:11,222 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 312 transitions. Word has length 57 [2024-10-31 22:02:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:11,223 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 312 transitions. [2024-10-31 22:02:11,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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) [2024-10-31 22:02:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 312 transitions. [2024-10-31 22:02:11,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-31 22:02:11,223 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:11,224 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] [2024-10-31 22:02:11,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-31 22:02:11,224 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:02:11,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:11,225 INFO L85 PathProgramCache]: Analyzing trace with hash 179394723, now seen corresponding path program 1 times [2024-10-31 22:02:11,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:11,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37994135] [2024-10-31 22:02:11,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:11,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:12,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:02:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:02:12,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:12,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37994135] [2024-10-31 22:02:12,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37994135] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:12,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835663772] [2024-10-31 22:02:12,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:12,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:12,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:12,372 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:12,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d01762-e2fc-4eca-8b52-d7c69eaaaa0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:02:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:12,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 1238 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-31 22:02:12,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:12,862 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 [2024-10-31 22:02:12,898 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 [2024-10-31 22:02:12,903 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 [2024-10-31 22:02:13,242 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 [2024-10-31 22:02:13,246 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 [2024-10-31 22:02:13,285 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:02:13,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:02:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:02:13,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835663772] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:02:13,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:02:13,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-10-31 22:02:13,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993683999] [2024-10-31 22:02:13,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:02:13,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-31 22:02:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:13,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-31 22:02:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2024-10-31 22:02:13,637 INFO L87 Difference]: Start difference. First operand 275 states and 312 transitions. Second operand has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 states have internal predecessors, (69), 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)