./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f91d2143e2aa98b5d48c7de2c4b17a3507ecfb748f26bae9be6d0588f4557bb1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:28:40,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:28:40,366 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 01:28:40,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:28:40,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:28:40,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:28:40,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:28:40,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:28:40,419 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:28:40,419 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:28:40,420 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:28:40,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:28:40,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:28:40,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:28:40,421 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:28:40,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:28:40,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:28:40,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:28:40,422 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:28:40,422 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:28:40,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:28:40,423 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:28:40,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:28:40,423 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:28:40,423 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:28:40,423 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:28:40,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:28:40,423 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:28:40,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:28:40,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:28:40,424 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:28:40,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:28:40,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:28:40,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:28:40,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:28:40,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:28:40,425 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:28:40,426 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:28:40,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:28:40,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:28:40,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:28:40,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:28:40,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:28:40,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:28:40,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:28:40,427 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC 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 ! call(reach_error())) ) 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 -> f91d2143e2aa98b5d48c7de2c4b17a3507ecfb748f26bae9be6d0588f4557bb1 [2024-11-24 01:28:40,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:28:40,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:28:40,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:28:40,798 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:28:40,798 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:28:40,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-24 01:28:43,871 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/data/7ebc978d9/7f38acfa77b44bfaa2c820fbbb3004e7/FLAGd598195ce [2024-11-24 01:28:44,574 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:28:44,575 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-24 01:28:44,626 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/data/7ebc978d9/7f38acfa77b44bfaa2c820fbbb3004e7/FLAGd598195ce [2024-11-24 01:28:44,652 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/data/7ebc978d9/7f38acfa77b44bfaa2c820fbbb3004e7 [2024-11-24 01:28:44,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:28:44,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:28:44,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:28:44,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:28:44,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:28:44,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:28:44" (1/1) ... [2024-11-24 01:28:44,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74689907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:44, skipping insertion in model container [2024-11-24 01:28:44,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:28:44" (1/1) ... [2024-11-24 01:28:44,785 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:28:45,616 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i[183784,183797] [2024-11-24 01:28:45,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:28:45,684 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:28:45,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6057] [2024-11-24 01:28:45,900 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6060] [2024-11-24 01:28:45,901 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6063] [2024-11-24 01:28:45,901 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6066] [2024-11-24 01:28:45,901 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6069] [2024-11-24 01:28:45,923 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i[183784,183797] [2024-11-24 01:28:45,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:28:45,975 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:28:45,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45 WrapperNode [2024-11-24 01:28:45,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:28:45,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:28:45,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:28:45,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:28:45,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (1/1) ... [2024-11-24 01:28:46,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (1/1) ... [2024-11-24 01:28:46,065 INFO L138 Inliner]: procedures = 69, calls = 171, calls flagged for inlining = 23, calls inlined = 16, statements flattened = 364 [2024-11-24 01:28:46,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:28:46,068 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:28:46,069 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:28:46,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:28:46,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (1/1) ... [2024-11-24 01:28:46,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (1/1) ... [2024-11-24 01:28:46,091 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (1/1) ... [2024-11-24 01:28:46,163 INFO L175 MemorySlicer]: Split 100 memory accesses to 7 slices as follows [2, 1, 9, 78, 3, 3, 4]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 0, 4, 0, 0, 3, 0]. The 81 writes are split as follows [0, 1, 0, 78, 0, 0, 2]. [2024-11-24 01:28:46,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (1/1) ... [2024-11-24 01:28:46,164 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (1/1) ... [2024-11-24 01:28:46,199 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (1/1) ... [2024-11-24 01:28:46,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (1/1) ... [2024-11-24 01:28:46,214 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (1/1) ... [2024-11-24 01:28:46,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (1/1) ... [2024-11-24 01:28:46,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (1/1) ... [2024-11-24 01:28:46,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:28:46,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:28:46,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:28:46,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:28:46,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (1/1) ... [2024-11-24 01:28:46,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:28:46,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:28:46,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:28:46,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:28:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:28:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 01:28:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 01:28:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-24 01:28:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-24 01:28:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-24 01:28:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-24 01:28:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-24 01:28:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:28:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-24 01:28:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-24 01:28:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:28:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:28:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 01:28:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 01:28:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 01:28:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 01:28:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-24 01:28:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-24 01:28:46,338 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-24 01:28:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 01:28:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 01:28:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 01:28:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-24 01:28:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-24 01:28:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-24 01:28:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-24 01:28:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-24 01:28:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-24 01:28:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:28:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 01:28:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 01:28:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 01:28:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-24 01:28:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-24 01:28:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-24 01:28:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-24 01:28:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-24 01:28:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-24 01:28:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-24 01:28:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-24 01:28:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:28:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:28:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:28:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:28:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 01:28:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 01:28:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 01:28:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 01:28:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 01:28:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:28:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:28:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:28:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-24 01:28:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-24 01:28:46,653 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:28:46,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:28:46,676 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-24 01:28:51,771 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-24 01:28:51,771 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:28:51,785 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:28:51,785 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:28:51,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:28:51 BoogieIcfgContainer [2024-11-24 01:28:51,788 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:28:51,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:28:51,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:28:51,797 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:28:51,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:28:44" (1/3) ... [2024-11-24 01:28:51,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d4fa83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:28:51, skipping insertion in model container [2024-11-24 01:28:51,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:28:45" (2/3) ... [2024-11-24 01:28:51,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d4fa83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:28:51, skipping insertion in model container [2024-11-24 01:28:51,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:28:51" (3/3) ... [2024-11-24 01:28:51,799 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-24 01:28:51,818 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:28:51,821 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i that has 8 procedures, 93 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:28:51,896 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:28:51,913 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=LoopHeads, 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;@490149ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:28:51,913 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:28:51,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 78 states have internal predecessors, (100), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 01:28:51,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 01:28:51,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:51,926 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:28:51,928 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:51,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:51,935 INFO L85 PathProgramCache]: Analyzing trace with hash 245989502, now seen corresponding path program 1 times [2024-11-24 01:28:51,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:51,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485835603] [2024-11-24 01:28:51,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:51,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-24 01:28:53,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:53,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485835603] [2024-11-24 01:28:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485835603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:28:53,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66181925] [2024-11-24 01:28:53,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:53,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:28:53,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:28:53,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:28:53,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:28:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:54,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:28:54,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:28:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 01:28:54,760 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:28:54,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66181925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:54,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:28:54,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:28:54,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631275143] [2024-11-24 01:28:54,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:54,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:28:54,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:54,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:28:54,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:28:54,794 INFO L87 Difference]: Start difference. First operand has 92 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 78 states have internal predecessors, (100), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:28:54,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:54,827 INFO L93 Difference]: Finished difference Result 179 states and 241 transitions. [2024-11-24 01:28:54,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:28:54,830 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2024-11-24 01:28:54,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:54,836 INFO L225 Difference]: With dead ends: 179 [2024-11-24 01:28:54,836 INFO L226 Difference]: Without dead ends: 82 [2024-11-24 01:28:54,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:28:54,843 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:28:54,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:28:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-24 01:28:54,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-24 01:28:54,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 67 states have (on average 1.328358208955224) internal successors, (89), 68 states have internal predecessors, (89), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-24 01:28:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2024-11-24 01:28:54,894 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 61 [2024-11-24 01:28:54,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:54,894 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2024-11-24 01:28:54,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:28:54,895 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2024-11-24 01:28:54,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 01:28:54,897 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:54,897 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:28:54,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:28:55,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:28:55,098 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:55,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1815893242, now seen corresponding path program 1 times [2024-11-24 01:28:55,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:55,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452668050] [2024-11-24 01:28:55,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:55,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:28:56,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:56,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452668050] [2024-11-24 01:28:56,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452668050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:56,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:56,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:28:56,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583401251] [2024-11-24 01:28:56,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:56,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:28:56,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:56,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:28:56,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:28:56,319 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:00,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:29:00,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:00,482 INFO L93 Difference]: Finished difference Result 178 states and 240 transitions. [2024-11-24 01:29:00,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:29:00,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2024-11-24 01:29:00,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:00,485 INFO L225 Difference]: With dead ends: 178 [2024-11-24 01:29:00,485 INFO L226 Difference]: Without dead ends: 126 [2024-11-24 01:29:00,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:00,487 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 57 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:00,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 196 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-24 01:29:00,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-24 01:29:00,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2024-11-24 01:29:00,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 106 states have (on average 1.3679245283018868) internal successors, (145), 107 states have internal predecessors, (145), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-24 01:29:00,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 163 transitions. [2024-11-24 01:29:00,502 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 163 transitions. Word has length 61 [2024-11-24 01:29:00,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:00,504 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 163 transitions. [2024-11-24 01:29:00,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:00,504 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 163 transitions. [2024-11-24 01:29:00,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 01:29:00,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:00,507 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:00,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:29:00,507 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:00,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:00,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1948637714, now seen corresponding path program 1 times [2024-11-24 01:29:00,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:00,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61492746] [2024-11-24 01:29:00,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:00,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:29:01,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:01,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61492746] [2024-11-24 01:29:01,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61492746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:01,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:29:01,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:29:01,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982841839] [2024-11-24 01:29:01,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:01,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:29:01,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:01,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:29:01,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:01,399 INFO L87 Difference]: Start difference. First operand 123 states and 163 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:01,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:01,464 INFO L93 Difference]: Finished difference Result 133 states and 171 transitions. [2024-11-24 01:29:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:29:01,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 64 [2024-11-24 01:29:01,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:01,470 INFO L225 Difference]: With dead ends: 133 [2024-11-24 01:29:01,470 INFO L226 Difference]: Without dead ends: 128 [2024-11-24 01:29:01,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:01,471 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 100 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:01,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 112 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:29:01,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-24 01:29:01,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2024-11-24 01:29:01,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 106 states have (on average 1.3584905660377358) internal successors, (144), 107 states have internal predecessors, (144), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-24 01:29:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 162 transitions. [2024-11-24 01:29:01,495 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 162 transitions. Word has length 64 [2024-11-24 01:29:01,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:01,499 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 162 transitions. [2024-11-24 01:29:01,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 162 transitions. [2024-11-24 01:29:01,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 01:29:01,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:01,501 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:01,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:29:01,501 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:01,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2005896016, now seen corresponding path program 1 times [2024-11-24 01:29:01,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:01,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441877816] [2024-11-24 01:29:01,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:01,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:29:02,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:02,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441877816] [2024-11-24 01:29:02,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441877816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:02,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:29:02,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:29:02,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987623501] [2024-11-24 01:29:02,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:02,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:29:02,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:02,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:29:02,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:02,357 INFO L87 Difference]: Start difference. First operand 123 states and 162 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-24 01:29:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:02,419 INFO L93 Difference]: Finished difference Result 306 states and 419 transitions. [2024-11-24 01:29:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:29:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2024-11-24 01:29:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:02,422 INFO L225 Difference]: With dead ends: 306 [2024-11-24 01:29:02,422 INFO L226 Difference]: Without dead ends: 209 [2024-11-24 01:29:02,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:02,424 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 77 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:02,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 170 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:29:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-24 01:29:02,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 205. [2024-11-24 01:29:02,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 184 states have (on average 1.3858695652173914) internal successors, (255), 185 states have internal predecessors, (255), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-24 01:29:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 277 transitions. [2024-11-24 01:29:02,458 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 277 transitions. Word has length 64 [2024-11-24 01:29:02,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:02,459 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 277 transitions. [2024-11-24 01:29:02,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-24 01:29:02,459 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 277 transitions. [2024-11-24 01:29:02,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:29:02,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:02,460 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:02,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:29:02,461 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:02,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:02,461 INFO L85 PathProgramCache]: Analyzing trace with hash -933583417, now seen corresponding path program 1 times [2024-11-24 01:29:02,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:02,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154060242] [2024-11-24 01:29:02,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:02,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:29:03,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:03,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154060242] [2024-11-24 01:29:03,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154060242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:03,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:29:03,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:29:03,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442944745] [2024-11-24 01:29:03,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:03,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:29:03,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:03,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:29:03,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:03,222 INFO L87 Difference]: Start difference. First operand 205 states and 277 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:03,308 INFO L93 Difference]: Finished difference Result 447 states and 615 transitions. [2024-11-24 01:29:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:29:03,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 70 [2024-11-24 01:29:03,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:03,312 INFO L225 Difference]: With dead ends: 447 [2024-11-24 01:29:03,312 INFO L226 Difference]: Without dead ends: 272 [2024-11-24 01:29:03,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:03,318 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 60 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:03,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 181 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:29:03,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-24 01:29:03,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 265. [2024-11-24 01:29:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 244 states have (on average 1.389344262295082) internal successors, (339), 245 states have internal predecessors, (339), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-24 01:29:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 361 transitions. [2024-11-24 01:29:03,349 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 361 transitions. Word has length 70 [2024-11-24 01:29:03,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:03,349 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 361 transitions. [2024-11-24 01:29:03,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 361 transitions. [2024-11-24 01:29:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-24 01:29:03,351 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:03,351 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:03,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:29:03,351 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:03,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:03,357 INFO L85 PathProgramCache]: Analyzing trace with hash 213591439, now seen corresponding path program 1 times [2024-11-24 01:29:03,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:03,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9592046] [2024-11-24 01:29:03,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:03,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 01:29:04,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:04,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9592046] [2024-11-24 01:29:04,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9592046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:29:04,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402110734] [2024-11-24 01:29:04,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:04,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:29:04,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:29:04,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:29:04,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:29:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:15,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 1361 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:29:15,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:29:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 01:29:15,961 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:29:15,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402110734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:15,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:29:15,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-24 01:29:15,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952665982] [2024-11-24 01:29:15,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:15,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:29:15,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:15,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:29:15,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:29:15,963 INFO L87 Difference]: Start difference. First operand 265 states and 361 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:16,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:16,068 INFO L93 Difference]: Finished difference Result 506 states and 697 transitions. [2024-11-24 01:29:16,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:29:16,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 81 [2024-11-24 01:29:16,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:16,071 INFO L225 Difference]: With dead ends: 506 [2024-11-24 01:29:16,072 INFO L226 Difference]: Without dead ends: 271 [2024-11-24 01:29:16,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:29:16,073 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:16,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 400 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:29:16,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-24 01:29:16,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2024-11-24 01:29:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 250 states have (on average 1.372) internal successors, (343), 251 states have internal predecessors, (343), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-24 01:29:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 365 transitions. [2024-11-24 01:29:16,087 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 365 transitions. Word has length 81 [2024-11-24 01:29:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:16,088 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 365 transitions. [2024-11-24 01:29:16,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:16,088 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 365 transitions. [2024-11-24 01:29:16,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-24 01:29:16,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:16,090 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:16,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:29:16,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-24 01:29:16,290 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:16,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:16,291 INFO L85 PathProgramCache]: Analyzing trace with hash 893649809, now seen corresponding path program 1 times [2024-11-24 01:29:16,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:16,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88007464] [2024-11-24 01:29:16,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:16,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:29:17,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:17,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88007464] [2024-11-24 01:29:17,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88007464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:29:17,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831590963] [2024-11-24 01:29:17,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:17,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:29:17,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:29:17,271 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:29:17,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:29:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:18,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:29:18,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:29:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 01:29:18,619 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:29:18,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831590963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:18,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:29:18,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-24 01:29:18,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144796531] [2024-11-24 01:29:18,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:18,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:29:18,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:18,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:29:18,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:29:18,621 INFO L87 Difference]: Start difference. First operand 271 states and 365 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:18,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:18,666 INFO L93 Difference]: Finished difference Result 499 states and 684 transitions. [2024-11-24 01:29:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:29:18,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 81 [2024-11-24 01:29:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:18,669 INFO L225 Difference]: With dead ends: 499 [2024-11-24 01:29:18,669 INFO L226 Difference]: Without dead ends: 258 [2024-11-24 01:29:18,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:29:18,670 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:18,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:29:18,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-24 01:29:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2024-11-24 01:29:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 241 states have (on average 1.3692946058091287) internal successors, (330), 242 states have internal predecessors, (330), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-24 01:29:18,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 348 transitions. [2024-11-24 01:29:18,683 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 348 transitions. Word has length 81 [2024-11-24 01:29:18,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:18,683 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 348 transitions. [2024-11-24 01:29:18,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:18,684 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 348 transitions. [2024-11-24 01:29:18,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-24 01:29:18,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:18,685 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:18,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 01:29:18,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-24 01:29:18,886 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:18,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1447172203, now seen corresponding path program 1 times [2024-11-24 01:29:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:18,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504882031] [2024-11-24 01:29:18,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:18,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 01:29:19,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:19,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504882031] [2024-11-24 01:29:19,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504882031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:19,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:29:19,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:29:19,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904170873] [2024-11-24 01:29:19,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:19,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:29:19,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:19,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:29:19,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:29:19,901 INFO L87 Difference]: Start difference. First operand 258 states and 348 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-24 01:29:23,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:29:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:24,172 INFO L93 Difference]: Finished difference Result 389 states and 529 transitions. [2024-11-24 01:29:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:29:24,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 83 [2024-11-24 01:29:24,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:24,176 INFO L225 Difference]: With dead ends: 389 [2024-11-24 01:29:24,176 INFO L226 Difference]: Without dead ends: 386 [2024-11-24 01:29:24,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:29:24,177 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 110 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:24,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 301 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-24 01:29:24,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-24 01:29:24,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 379. [2024-11-24 01:29:24,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 358 states have (on average 1.3826815642458101) internal successors, (495), 359 states have internal predecessors, (495), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-24 01:29:24,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 519 transitions. [2024-11-24 01:29:24,195 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 519 transitions. Word has length 83 [2024-11-24 01:29:24,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:24,195 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 519 transitions. [2024-11-24 01:29:24,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-24 01:29:24,196 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 519 transitions. [2024-11-24 01:29:24,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-24 01:29:24,197 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:24,197 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:24,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:29:24,198 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:24,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:24,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1762765999, now seen corresponding path program 1 times [2024-11-24 01:29:24,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:24,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424682131] [2024-11-24 01:29:24,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:24,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 01:29:24,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:24,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424682131] [2024-11-24 01:29:24,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424682131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:24,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:29:24,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:29:24,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897235802] [2024-11-24 01:29:24,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:24,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:29:24,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:24,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:29:24,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:24,962 INFO L87 Difference]: Start difference. First operand 379 states and 519 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:25,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:25,005 INFO L93 Difference]: Finished difference Result 631 states and 870 transitions. [2024-11-24 01:29:25,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:29:25,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 90 [2024-11-24 01:29:25,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:25,009 INFO L225 Difference]: With dead ends: 631 [2024-11-24 01:29:25,009 INFO L226 Difference]: Without dead ends: 379 [2024-11-24 01:29:25,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:25,010 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:25,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:29:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-24 01:29:25,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2024-11-24 01:29:25,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 358 states have (on average 1.3715083798882681) internal successors, (491), 359 states have internal predecessors, (491), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-24 01:29:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 515 transitions. [2024-11-24 01:29:25,027 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 515 transitions. Word has length 90 [2024-11-24 01:29:25,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:25,027 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 515 transitions. [2024-11-24 01:29:25,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:25,027 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 515 transitions. [2024-11-24 01:29:25,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-24 01:29:25,029 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:25,029 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:25,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:29:25,029 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:25,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:25,030 INFO L85 PathProgramCache]: Analyzing trace with hash 741697645, now seen corresponding path program 1 times [2024-11-24 01:29:25,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:25,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630981329] [2024-11-24 01:29:25,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:25,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:29:26,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:26,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630981329] [2024-11-24 01:29:26,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630981329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:29:26,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004625343] [2024-11-24 01:29:26,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:26,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:29:26,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:29:26,684 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:29:26,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:29:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:28,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 01:29:28,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:29:28,526 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 01:29:28,526 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:29:28,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004625343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:28,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:29:28,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-24 01:29:28,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190726652] [2024-11-24 01:29:28,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:28,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:29:28,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:28,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:29:28,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:29:28,528 INFO L87 Difference]: Start difference. First operand 379 states and 515 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:28,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:28,723 INFO L93 Difference]: Finished difference Result 631 states and 862 transitions. [2024-11-24 01:29:28,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:29:28,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 90 [2024-11-24 01:29:28,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:28,727 INFO L225 Difference]: With dead ends: 631 [2024-11-24 01:29:28,727 INFO L226 Difference]: Without dead ends: 379 [2024-11-24 01:29:28,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:29:28,729 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:28,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 492 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:29:28,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-24 01:29:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2024-11-24 01:29:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 358 states have (on average 1.3603351955307263) internal successors, (487), 359 states have internal predecessors, (487), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-24 01:29:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 511 transitions. [2024-11-24 01:29:28,752 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 511 transitions. Word has length 90 [2024-11-24 01:29:28,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:28,753 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 511 transitions. [2024-11-24 01:29:28,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 01:29:28,753 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 511 transitions. [2024-11-24 01:29:28,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-24 01:29:28,757 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:28,757 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:28,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 01:29:28,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 01:29:28,958 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:28,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:28,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1241462791, now seen corresponding path program 1 times [2024-11-24 01:29:28,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:28,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996006807] [2024-11-24 01:29:28,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:28,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 01:29:30,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:30,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996006807] [2024-11-24 01:29:30,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996006807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:29:30,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418563239] [2024-11-24 01:29:30,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:30,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:29:30,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:29:30,090 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:29:30,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:29:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:42,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 01:29:42,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:29:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 01:29:42,616 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:29:42,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418563239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:42,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:29:42,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 01:29:42,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635421134] [2024-11-24 01:29:42,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:42,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:29:42,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:42,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:29:42,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:29:42,619 INFO L87 Difference]: Start difference. First operand 379 states and 511 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 01:29:42,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:42,699 INFO L93 Difference]: Finished difference Result 740 states and 1004 transitions. [2024-11-24 01:29:42,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:29:42,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 97 [2024-11-24 01:29:42,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:42,702 INFO L225 Difference]: With dead ends: 740 [2024-11-24 01:29:42,702 INFO L226 Difference]: Without dead ends: 380 [2024-11-24 01:29:42,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:29:42,704 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:42,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 303 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:29:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-24 01:29:42,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-11-24 01:29:42,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 359 states have (on average 1.3593314763231197) internal successors, (488), 360 states have internal predecessors, (488), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-24 01:29:42,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 512 transitions. [2024-11-24 01:29:42,721 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 512 transitions. Word has length 97 [2024-11-24 01:29:42,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:42,722 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 512 transitions. [2024-11-24 01:29:42,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 01:29:42,722 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 512 transitions. [2024-11-24 01:29:42,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-24 01:29:42,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:42,724 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:42,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:29:42,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:29:42,924 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:42,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:42,925 INFO L85 PathProgramCache]: Analyzing trace with hash 575151683, now seen corresponding path program 1 times [2024-11-24 01:29:42,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:42,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637281950] [2024-11-24 01:29:42,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:42,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:29:44,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:44,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637281950] [2024-11-24 01:29:44,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637281950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:29:44,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838625484] [2024-11-24 01:29:44,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:44,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:29:44,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:29:44,320 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:29:44,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:29:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:47,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 01:29:47,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:29:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 01:29:47,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:29:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:29:48,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838625484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:29:48,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:29:48,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 11 [2024-11-24 01:29:48,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763603768] [2024-11-24 01:29:48,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:29:48,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:29:48,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:48,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:29:48,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:29:48,476 INFO L87 Difference]: Start difference. First operand 380 states and 512 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 01:29:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:48,761 INFO L93 Difference]: Finished difference Result 747 states and 1014 transitions. [2024-11-24 01:29:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:29:48,762 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2024-11-24 01:29:48,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:48,764 INFO L225 Difference]: With dead ends: 747 [2024-11-24 01:29:48,765 INFO L226 Difference]: Without dead ends: 383 [2024-11-24 01:29:48,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:29:48,767 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:48,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 604 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:29:48,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-24 01:29:48,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-11-24 01:29:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 362 states have (on average 1.356353591160221) internal successors, (491), 363 states have internal predecessors, (491), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-24 01:29:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 515 transitions. [2024-11-24 01:29:48,793 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 515 transitions. Word has length 99 [2024-11-24 01:29:48,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:48,795 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 515 transitions. [2024-11-24 01:29:48,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 01:29:48,796 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 515 transitions. [2024-11-24 01:29:48,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 01:29:48,797 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:48,797 INFO L218 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:48,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:29:48,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-24 01:29:48,998 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:48,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:48,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1477146873, now seen corresponding path program 2 times [2024-11-24 01:29:48,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:48,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320949574] [2024-11-24 01:29:48,999 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:29:48,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:49,929 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:29:49,930 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:29:54,857 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 01:29:54,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:54,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320949574] [2024-11-24 01:29:54,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320949574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:29:54,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691624634] [2024-11-24 01:29:54,858 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:29:54,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:29:54,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:29:54,860 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:29:54,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85500876-5cbf-4205-84bf-dadb611b7e3f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process