./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/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_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB --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-d790fec [2024-11-28 04:43:40,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:43:40,336 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 04:43:40,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:43:40,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:43:40,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:43:40,397 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:43:40,398 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:43:40,398 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:43:40,399 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:43:40,400 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:43:40,400 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:43:40,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:43:40,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:43:40,401 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:43:40,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:43:40,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:43:40,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:43:40,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:43:40,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:43:40,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:43:40,403 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:43:40,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:43:40,403 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:43:40,403 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:43:40,403 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:43:40,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:43:40,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:43:40,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:43:40,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:43:40,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:43:40,405 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:43:40,405 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:43:40,405 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:43:40,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:43:40,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:43:40,406 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:43:40,406 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:43:40,406 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:43:40,406 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:43:40,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:43:40,406 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:43:40,407 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:43:40,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:43:40,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:43:40,407 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_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 [2024-11-28 04:43:40,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:43:40,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:43:40,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:43:40,778 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:43:40,779 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:43:40,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-28 04:43:43,929 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/data/9148b1ae4/659de076b3b74314a979211e0eb35c1e/FLAG4d9d74a7a [2024-11-28 04:43:44,572 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:43:44,572 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-28 04:43:44,609 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/data/9148b1ae4/659de076b3b74314a979211e0eb35c1e/FLAG4d9d74a7a [2024-11-28 04:43:44,633 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/data/9148b1ae4/659de076b3b74314a979211e0eb35c1e [2024-11-28 04:43:44,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:43:44,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:43:44,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:43:44,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:43:44,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:43:44,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:43:44" (1/1) ... [2024-11-28 04:43:44,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de89cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:44, skipping insertion in model container [2024-11-28 04:43:44,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:43:44" (1/1) ... [2024-11-28 04:43:44,739 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:43:45,628 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_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/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] [2024-11-28 04:43:45,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:43:45,723 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:43:45,968 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] [2024-11-28 04:43:45,970 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] [2024-11-28 04:43:45,970 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] [2024-11-28 04:43:45,971 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] [2024-11-28 04:43:45,971 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] [2024-11-28 04:43:45,986 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_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/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] [2024-11-28 04:43:45,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:43:46,079 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:43:46,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46 WrapperNode [2024-11-28 04:43:46,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:43:46,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:43:46,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:43:46,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:43:46,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (1/1) ... [2024-11-28 04:43:46,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (1/1) ... [2024-11-28 04:43:46,180 INFO L138 Inliner]: procedures = 69, calls = 171, calls flagged for inlining = 23, calls inlined = 16, statements flattened = 364 [2024-11-28 04:43:46,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:43:46,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:43:46,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:43:46,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:43:46,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (1/1) ... [2024-11-28 04:43:46,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (1/1) ... [2024-11-28 04:43:46,206 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (1/1) ... [2024-11-28 04:43:46,257 INFO L175 MemorySlicer]: Split 100 memory accesses to 7 slices as follows [2, 9, 78, 3, 4, 3, 1]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 4, 0, 3, 0, 0, 0]. The 81 writes are split as follows [0, 0, 78, 0, 2, 0, 1]. [2024-11-28 04:43:46,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (1/1) ... [2024-11-28 04:43:46,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (1/1) ... [2024-11-28 04:43:46,300 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (1/1) ... [2024-11-28 04:43:46,302 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (1/1) ... [2024-11-28 04:43:46,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (1/1) ... [2024-11-28 04:43:46,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (1/1) ... [2024-11-28 04:43:46,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (1/1) ... [2024-11-28 04:43:46,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:43:46,344 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:43:46,344 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:43:46,344 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:43:46,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (1/1) ... [2024-11-28 04:43:46,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:43:46,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:46,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:43:46,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:43:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:43:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 04:43:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 04:43:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 04:43:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 04:43:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 04:43:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 04:43:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-28 04:43:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:43:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-28 04:43:46,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-28 04:43:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:43:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:43:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:43:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:43:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:43:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 04:43:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 04:43:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-28 04:43:46,437 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-28 04:43:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:43:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:43:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:43:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 04:43:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 04:43:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 04:43:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 04:43:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-28 04:43:46,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-28 04:43:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:43:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 04:43:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 04:43:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 04:43:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 04:43:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 04:43:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 04:43:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-28 04:43:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-28 04:43:46,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-28 04:43:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-28 04:43:46,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-28 04:43:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:43:46,439 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:43:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:43:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:43:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:43:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:43:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:43:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:43:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:43:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:43:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:43:46,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:43:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-28 04:43:46,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-28 04:43:46,822 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:43:46,825 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:43:46,853 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-28 04:43:51,882 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-28 04:43:51,882 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:43:51,898 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:43:51,899 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:43:51,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:43:51 BoogieIcfgContainer [2024-11-28 04:43:51,900 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:43:51,903 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:43:51,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:43:51,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:43:51,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:43:44" (1/3) ... [2024-11-28 04:43:51,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570577ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:43:51, skipping insertion in model container [2024-11-28 04:43:51,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:46" (2/3) ... [2024-11-28 04:43:51,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570577ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:43:51, skipping insertion in model container [2024-11-28 04:43:51,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:43:51" (3/3) ... [2024-11-28 04:43:51,918 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-28 04:43:51,937 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:43:51,940 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. [2024-11-28 04:43:52,015 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:43:52,036 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;@168ab3c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:43:52,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:43:52,042 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) [2024-11-28 04:43:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 04:43:52,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:52,055 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] [2024-11-28 04:43:52,055 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:52,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:52,064 INFO L85 PathProgramCache]: Analyzing trace with hash 245989502, now seen corresponding path program 1 times [2024-11-28 04:43:52,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:52,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727286799] [2024-11-28 04:43:52,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:52,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:43:53,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:53,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727286799] [2024-11-28 04:43:53,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727286799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:53,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413799054] [2024-11-28 04:43:53,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:53,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:53,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:53,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:53,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:43:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:55,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:43:55,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:55,275 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:43:55,277 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413799054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:55,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:55,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:43:55,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60363985] [2024-11-28 04:43:55,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:55,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:43:55,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:55,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:43:55,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:43:55,319 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) [2024-11-28 04:43:55,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:55,358 INFO L93 Difference]: Finished difference Result 179 states and 241 transitions. [2024-11-28 04:43:55,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:43:55,360 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 [2024-11-28 04:43:55,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:55,369 INFO L225 Difference]: With dead ends: 179 [2024-11-28 04:43:55,370 INFO L226 Difference]: Without dead ends: 82 [2024-11-28 04:43:55,373 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 [2024-11-28 04:43:55,378 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 [2024-11-28 04:43:55,380 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] [2024-11-28 04:43:55,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-28 04:43:55,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-28 04:43:55,425 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) [2024-11-28 04:43:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2024-11-28 04:43:55,435 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 61 [2024-11-28 04:43:55,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:55,437 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2024-11-28 04:43:55,437 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) [2024-11-28 04:43:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2024-11-28 04:43:55,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 04:43:55,441 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:55,441 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] [2024-11-28 04:43:55,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:43:55,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:55,647 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:55,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:55,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1815893242, now seen corresponding path program 1 times [2024-11-28 04:43:55,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:55,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808540210] [2024-11-28 04:43:55,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:55,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:43:57,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:57,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808540210] [2024-11-28 04:43:57,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808540210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:57,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:57,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:43:57,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531344322] [2024-11-28 04:43:57,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:57,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:43:57,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:57,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:43:57,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:43:57,086 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) [2024-11-28 04:44:01,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:44:01,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:01,313 INFO L93 Difference]: Finished difference Result 178 states and 240 transitions. [2024-11-28 04:44:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:44:01,315 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 [2024-11-28 04:44:01,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:01,316 INFO L225 Difference]: With dead ends: 178 [2024-11-28 04:44:01,316 INFO L226 Difference]: Without dead ends: 126 [2024-11-28 04:44:01,317 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 [2024-11-28 04:44:01,321 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, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:01,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 196 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 04:44:01,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-28 04:44:01,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2024-11-28 04:44:01,342 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) [2024-11-28 04:44:01,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 163 transitions. [2024-11-28 04:44:01,346 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 163 transitions. Word has length 61 [2024-11-28 04:44:01,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:01,350 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 163 transitions. [2024-11-28 04:44:01,350 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) [2024-11-28 04:44:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 163 transitions. [2024-11-28 04:44:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 04:44:01,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:01,354 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] [2024-11-28 04:44:01,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:44:01,355 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:01,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1948637714, now seen corresponding path program 1 times [2024-11-28 04:44:01,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:01,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572532714] [2024-11-28 04:44:01,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:01,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:44:02,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:02,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572532714] [2024-11-28 04:44:02,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572532714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:02,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:02,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:44:02,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933412702] [2024-11-28 04:44:02,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:02,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:44:02,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:02,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:44:02,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:44:02,374 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) [2024-11-28 04:44:02,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:02,461 INFO L93 Difference]: Finished difference Result 133 states and 171 transitions. [2024-11-28 04:44:02,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:44:02,461 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 [2024-11-28 04:44:02,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:02,463 INFO L225 Difference]: With dead ends: 133 [2024-11-28 04:44:02,463 INFO L226 Difference]: Without dead ends: 128 [2024-11-28 04:44:02,463 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 [2024-11-28 04:44:02,467 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 100 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-28 04:44:02,468 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] [2024-11-28 04:44:02,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-28 04:44:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2024-11-28 04:44:02,489 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) [2024-11-28 04:44:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 162 transitions. [2024-11-28 04:44:02,491 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 162 transitions. Word has length 64 [2024-11-28 04:44:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:02,492 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 162 transitions. [2024-11-28 04:44:02,492 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) [2024-11-28 04:44:02,492 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 162 transitions. [2024-11-28 04:44:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 04:44:02,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:02,494 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] [2024-11-28 04:44:02,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:44:02,495 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:02,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:02,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2005896016, now seen corresponding path program 1 times [2024-11-28 04:44:02,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:02,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45167104] [2024-11-28 04:44:02,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:02,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:44:03,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:03,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45167104] [2024-11-28 04:44:03,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45167104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:03,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:03,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:44:03,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166132785] [2024-11-28 04:44:03,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:03,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:44:03,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:03,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:44:03,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:44:03,499 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) [2024-11-28 04:44:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:03,571 INFO L93 Difference]: Finished difference Result 306 states and 419 transitions. [2024-11-28 04:44:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:44:03,572 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 [2024-11-28 04:44:03,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:03,574 INFO L225 Difference]: With dead ends: 306 [2024-11-28 04:44:03,578 INFO L226 Difference]: Without dead ends: 209 [2024-11-28 04:44:03,579 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 [2024-11-28 04:44:03,580 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 [2024-11-28 04:44:03,580 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] [2024-11-28 04:44:03,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-28 04:44:03,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 205. [2024-11-28 04:44:03,609 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) [2024-11-28 04:44:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 277 transitions. [2024-11-28 04:44:03,613 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 277 transitions. Word has length 64 [2024-11-28 04:44:03,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:03,615 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 277 transitions. [2024-11-28 04:44:03,615 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) [2024-11-28 04:44:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 277 transitions. [2024-11-28 04:44:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 04:44:03,620 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:03,620 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] [2024-11-28 04:44:03,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:44:03,620 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:03,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:03,621 INFO L85 PathProgramCache]: Analyzing trace with hash -933583417, now seen corresponding path program 1 times [2024-11-28 04:44:03,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:03,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739033374] [2024-11-28 04:44:03,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:03,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:44:04,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:04,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739033374] [2024-11-28 04:44:04,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739033374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:04,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:04,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:44:04,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541078819] [2024-11-28 04:44:04,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:04,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:44:04,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:04,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:44:04,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:44:04,752 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) [2024-11-28 04:44:04,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:04,850 INFO L93 Difference]: Finished difference Result 447 states and 615 transitions. [2024-11-28 04:44:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:44:04,851 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 [2024-11-28 04:44:04,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:04,854 INFO L225 Difference]: With dead ends: 447 [2024-11-28 04:44:04,856 INFO L226 Difference]: Without dead ends: 272 [2024-11-28 04:44:04,857 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 [2024-11-28 04:44:04,862 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 [2024-11-28 04:44:04,863 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] [2024-11-28 04:44:04,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-28 04:44:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 265. [2024-11-28 04:44:04,904 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) [2024-11-28 04:44:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 361 transitions. [2024-11-28 04:44:04,911 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 361 transitions. Word has length 70 [2024-11-28 04:44:04,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:04,912 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 361 transitions. [2024-11-28 04:44:04,912 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) [2024-11-28 04:44:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 361 transitions. [2024-11-28 04:44:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 04:44:04,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:04,914 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] [2024-11-28 04:44:04,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:44:04,915 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:04,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:04,916 INFO L85 PathProgramCache]: Analyzing trace with hash 213591439, now seen corresponding path program 1 times [2024-11-28 04:44:04,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:04,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750554121] [2024-11-28 04:44:04,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:04,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:44:06,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:06,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750554121] [2024-11-28 04:44:06,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750554121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:06,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680129659] [2024-11-28 04:44:06,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:06,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:06,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:06,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:06,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:44:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:08,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 1361 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:44:08,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:44:08,306 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:44:08,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680129659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:08,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:44:08,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:44:08,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328192934] [2024-11-28 04:44:08,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:08,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:44:08,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:08,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:44:08,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:44:08,309 INFO L87 Difference]: Start difference. First operand 265 states and 361 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:44:08,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:08,396 INFO L93 Difference]: Finished difference Result 512 states and 704 transitions. [2024-11-28 04:44:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:44:08,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 81 [2024-11-28 04:44:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:08,400 INFO L225 Difference]: With dead ends: 512 [2024-11-28 04:44:08,400 INFO L226 Difference]: Without dead ends: 266 [2024-11-28 04:44:08,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:44:08,403 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 [2024-11-28 04:44:08,405 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] [2024-11-28 04:44:08,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-28 04:44:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-28 04:44:08,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 245 states have (on average 1.3877551020408163) internal successors, (340), 246 states have internal predecessors, (340), 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) [2024-11-28 04:44:08,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 362 transitions. [2024-11-28 04:44:08,435 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 362 transitions. Word has length 81 [2024-11-28 04:44:08,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:08,436 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 362 transitions. [2024-11-28 04:44:08,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:44:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 362 transitions. [2024-11-28 04:44:08,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:44:08,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:08,442 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:44:08,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:44:08,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:08,643 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:08,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:08,643 INFO L85 PathProgramCache]: Analyzing trace with hash 380634059, now seen corresponding path program 1 times [2024-11-28 04:44:08,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:08,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441878481] [2024-11-28 04:44:08,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:08,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:44:10,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:10,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441878481] [2024-11-28 04:44:10,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441878481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:10,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388464639] [2024-11-28 04:44:10,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:10,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:10,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:10,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:10,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:44:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:13,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:44:13,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:44:13,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:44:14,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388464639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:14,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:14,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 04:44:14,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668479335] [2024-11-28 04:44:14,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:14,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:44:14,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:14,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:44:14,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:44:14,228 INFO L87 Difference]: Start difference. First operand 266 states and 362 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:44:14,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:14,520 INFO L93 Difference]: Finished difference Result 519 states and 714 transitions. [2024-11-28 04:44:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:44:14,524 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2024-11-28 04:44:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:14,526 INFO L225 Difference]: With dead ends: 519 [2024-11-28 04:44:14,526 INFO L226 Difference]: Without dead ends: 269 [2024-11-28 04:44:14,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:44:14,527 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:14,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 404 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:44:14,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-28 04:44:14,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-11-28 04:44:14,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 248 states have (on average 1.3830645161290323) internal successors, (343), 249 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) [2024-11-28 04:44:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 365 transitions. [2024-11-28 04:44:14,543 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 365 transitions. Word has length 83 [2024-11-28 04:44:14,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:14,543 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 365 transitions. [2024-11-28 04:44:14,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:44:14,544 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 365 transitions. [2024-11-28 04:44:14,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:44:14,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:14,546 INFO L218 NwaCegarLoop]: trace histogram [8, 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] [2024-11-28 04:44:14,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:44:14,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:14,746 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:14,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:14,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1160672399, now seen corresponding path program 2 times [2024-11-28 04:44:14,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:14,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773448057] [2024-11-28 04:44:14,747 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:44:14,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:15,605 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:44:15,606 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 04:44:16,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:16,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773448057] [2024-11-28 04:44:16,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773448057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:16,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:16,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:44:16,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995347784] [2024-11-28 04:44:16,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:16,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:44:16,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:16,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:44:16,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:44:16,469 INFO L87 Difference]: Start difference. First operand 269 states and 365 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-28 04:44:16,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:16,576 INFO L93 Difference]: Finished difference Result 510 states and 701 transitions. [2024-11-28 04:44:16,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:44:16,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 89 [2024-11-28 04:44:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:16,579 INFO L225 Difference]: With dead ends: 510 [2024-11-28 04:44:16,579 INFO L226 Difference]: Without dead ends: 275 [2024-11-28 04:44:16,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:44:16,581 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 [2024-11-28 04:44:16,581 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] [2024-11-28 04:44:16,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-28 04:44:16,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2024-11-28 04:44:16,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 254 states have (on average 1.3661417322834646) internal successors, (347), 255 states have internal predecessors, (347), 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) [2024-11-28 04:44:16,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 369 transitions. [2024-11-28 04:44:16,598 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 369 transitions. Word has length 89 [2024-11-28 04:44:16,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:16,598 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 369 transitions. [2024-11-28 04:44:16,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-28 04:44:16,598 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 369 transitions. [2024-11-28 04:44:16,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:44:16,599 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:16,600 INFO L218 NwaCegarLoop]: trace histogram [8, 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] [2024-11-28 04:44:16,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:44:16,600 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:16,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:16,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1840730769, now seen corresponding path program 1 times [2024-11-28 04:44:16,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:16,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102236481] [2024-11-28 04:44:16,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:16,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-28 04:44:17,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:17,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102236481] [2024-11-28 04:44:17,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102236481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:17,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804602696] [2024-11-28 04:44:17,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:17,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:17,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:17,510 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:17,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:44:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:19,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:44:19,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 04:44:19,119 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:44:19,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804602696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:19,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:44:19,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 04:44:19,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566044728] [2024-11-28 04:44:19,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:19,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:44:19,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:19,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:44:19,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:44:19,121 INFO L87 Difference]: Start difference. First operand 275 states and 369 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-28 04:44:19,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:19,165 INFO L93 Difference]: Finished difference Result 503 states and 688 transitions. [2024-11-28 04:44:19,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:44:19,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 89 [2024-11-28 04:44:19,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:19,168 INFO L225 Difference]: With dead ends: 503 [2024-11-28 04:44:19,168 INFO L226 Difference]: Without dead ends: 262 [2024-11-28 04:44:19,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:44:19,170 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 [2024-11-28 04:44:19,170 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] [2024-11-28 04:44:19,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-28 04:44:19,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2024-11-28 04:44:19,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 245 states have (on average 1.363265306122449) internal successors, (334), 246 states have internal predecessors, (334), 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) [2024-11-28 04:44:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 352 transitions. [2024-11-28 04:44:19,186 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 352 transitions. Word has length 89 [2024-11-28 04:44:19,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:19,186 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 352 transitions. [2024-11-28 04:44:19,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-28 04:44:19,187 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 352 transitions. [2024-11-28 04:44:19,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:44:19,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:19,192 INFO L218 NwaCegarLoop]: trace histogram [8, 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] [2024-11-28 04:44:19,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:44:19,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:19,393 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:19,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:19,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1835436395, now seen corresponding path program 1 times [2024-11-28 04:44:19,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:19,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967344763] [2024-11-28 04:44:19,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:19,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 04:44:20,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:20,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967344763] [2024-11-28 04:44:20,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967344763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:20,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:20,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:44:20,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200861663] [2024-11-28 04:44:20,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:20,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:44:20,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:20,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:44:20,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:44:20,311 INFO L87 Difference]: Start difference. First operand 262 states and 352 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2024-11-28 04:44:24,344 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 [] [2024-11-28 04:44:24,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:24,577 INFO L93 Difference]: Finished difference Result 393 states and 533 transitions. [2024-11-28 04:44:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:44:24,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 91 [2024-11-28 04:44:24,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:24,581 INFO L225 Difference]: With dead ends: 393 [2024-11-28 04:44:24,581 INFO L226 Difference]: Without dead ends: 390 [2024-11-28 04:44:24,581 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 [2024-11-28 04:44:24,582 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, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:24,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 301 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 04:44:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-28 04:44:24,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 383. [2024-11-28 04:44:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 362 states have (on average 1.3784530386740332) internal successors, (499), 363 states have internal predecessors, (499), 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) [2024-11-28 04:44:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 523 transitions. [2024-11-28 04:44:24,600 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 523 transitions. Word has length 91 [2024-11-28 04:44:24,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:24,600 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 523 transitions. [2024-11-28 04:44:24,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2024-11-28 04:44:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 523 transitions. [2024-11-28 04:44:24,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 04:44:24,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:24,602 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] [2024-11-28 04:44:24,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:44:24,602 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:24,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:24,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1410908753, now seen corresponding path program 1 times [2024-11-28 04:44:24,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:24,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544409194] [2024-11-28 04:44:24,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:24,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 04:44:25,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:25,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544409194] [2024-11-28 04:44:25,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544409194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:25,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:25,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:44:25,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654326750] [2024-11-28 04:44:25,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:25,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:44:25,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:25,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:44:25,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:44:25,203 INFO L87 Difference]: Start difference. First operand 383 states and 523 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-28 04:44:25,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:25,248 INFO L93 Difference]: Finished difference Result 635 states and 874 transitions. [2024-11-28 04:44:25,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:44:25,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 98 [2024-11-28 04:44:25,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:25,252 INFO L225 Difference]: With dead ends: 635 [2024-11-28 04:44:25,252 INFO L226 Difference]: Without dead ends: 383 [2024-11-28 04:44:25,252 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 [2024-11-28 04:44:25,253 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 [2024-11-28 04:44:25,254 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] [2024-11-28 04:44:25,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-28 04:44:25,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-11-28 04:44:25,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 362 states have (on average 1.367403314917127) internal successors, (495), 363 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) [2024-11-28 04:44:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 519 transitions. [2024-11-28 04:44:25,272 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 519 transitions. Word has length 98 [2024-11-28 04:44:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:25,272 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 519 transitions. [2024-11-28 04:44:25,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-28 04:44:25,273 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 519 transitions. [2024-11-28 04:44:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 04:44:25,274 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:25,274 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] [2024-11-28 04:44:25,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:44:25,275 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:25,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:25,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1862990189, now seen corresponding path program 1 times [2024-11-28 04:44:25,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:25,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131966843] [2024-11-28 04:44:25,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:25,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-28 04:44:26,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:26,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131966843] [2024-11-28 04:44:26,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131966843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:26,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576513058] [2024-11-28 04:44:26,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:26,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:26,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:26,890 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:26,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:44:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:28,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:44:28,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 04:44:28,505 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:44:28,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576513058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:28,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:44:28,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-28 04:44:28,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966033677] [2024-11-28 04:44:28,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:28,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:44:28,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:28,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:44:28,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:44:28,509 INFO L87 Difference]: Start difference. First operand 383 states and 519 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2024-11-28 04:44:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:28,678 INFO L93 Difference]: Finished difference Result 635 states and 866 transitions. [2024-11-28 04:44:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:44:28,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 98 [2024-11-28 04:44:28,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:28,682 INFO L225 Difference]: With dead ends: 635 [2024-11-28 04:44:28,682 INFO L226 Difference]: Without dead ends: 383 [2024-11-28 04:44:28,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:44:28,683 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-28 04:44:28,683 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] [2024-11-28 04:44:28,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-28 04:44:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-11-28 04:44:28,705 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) [2024-11-28 04:44:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 515 transitions. [2024-11-28 04:44:28,711 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 515 transitions. Word has length 98 [2024-11-28 04:44:28,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:28,711 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 515 transitions. [2024-11-28 04:44:28,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2024-11-28 04:44:28,712 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 515 transitions. [2024-11-28 04:44:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 04:44:28,715 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:28,715 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] [2024-11-28 04:44:28,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:44:28,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:28,916 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:28,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1477146873, now seen corresponding path program 1 times [2024-11-28 04:44:28,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:28,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044438190] [2024-11-28 04:44:28,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:28,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:44:34,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:34,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044438190] [2024-11-28 04:44:34,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044438190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:34,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349681881] [2024-11-28 04:44:34,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:34,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:34,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:34,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:34,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:44:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:43,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 04:44:43,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:43,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 71 [2024-11-28 04:44:43,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 39 [2024-11-28 04:44:43,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-11-28 04:44:43,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-28 04:44:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 04:44:44,256 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:44:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349681881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:44,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:44:44,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-11-28 04:44:44,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001078173] [2024-11-28 04:44:44,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:44,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:44:44,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:44,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:44:44,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:44:44,258 INFO L87 Difference]: Start difference. First operand 383 states and 515 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:44:48,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:44:52,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:44:52,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:52,681 INFO L93 Difference]: Finished difference Result 564 states and 745 transitions. [2024-11-28 04:44:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:44:52,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 105 [2024-11-28 04:44:52,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:52,684 INFO L225 Difference]: With dead ends: 564 [2024-11-28 04:44:52,684 INFO L226 Difference]: Without dead ends: 304 [2024-11-28 04:44:52,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:44:52,686 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 4 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:52,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 597 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2024-11-28 04:44:52,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-28 04:44:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 280. [2024-11-28 04:44:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 261 states have (on average 1.318007662835249) internal successors, (344), 262 states have internal predecessors, (344), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 04:44:52,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 366 transitions. [2024-11-28 04:44:52,702 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 366 transitions. Word has length 105 [2024-11-28 04:44:52,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:52,703 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 366 transitions. [2024-11-28 04:44:52,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:44:52,703 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 366 transitions. [2024-11-28 04:44:52,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:44:52,705 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:52,705 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, 1, 1] [2024-11-28 04:44:52,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:44:52,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:52,906 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:52,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:52,906 INFO L85 PathProgramCache]: Analyzing trace with hash 315949935, now seen corresponding path program 1 times [2024-11-28 04:44:52,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:52,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809363293] [2024-11-28 04:44:52,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:52,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-28 04:44:54,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:54,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809363293] [2024-11-28 04:44:54,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809363293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:54,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:54,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:44:54,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179022146] [2024-11-28 04:44:54,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:54,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:44:54,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:54,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:44:54,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:44:54,221 INFO L87 Difference]: Start difference. First operand 280 states and 366 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:44:58,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:45:02,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:45:02,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:02,840 INFO L93 Difference]: Finished difference Result 282 states and 367 transitions. [2024-11-28 04:45:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:45:02,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 107 [2024-11-28 04:45:02,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:02,843 INFO L225 Difference]: With dead ends: 282 [2024-11-28 04:45:02,845 INFO L226 Difference]: Without dead ends: 275 [2024-11-28 04:45:02,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:45:02,846 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 67 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:02,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 221 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 79 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2024-11-28 04:45:02,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-28 04:45:02,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2024-11-28 04:45:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 257 states have (on average 1.3073929961089494) internal successors, (336), 257 states have internal predecessors, (336), 11 states have call successors, (11), 9 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 04:45:02,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 357 transitions. [2024-11-28 04:45:02,866 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 357 transitions. Word has length 107 [2024-11-28 04:45:02,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:02,868 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 357 transitions. [2024-11-28 04:45:02,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:45:02,869 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 357 transitions. [2024-11-28 04:45:02,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 04:45:02,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:02,874 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, 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] [2024-11-28 04:45:02,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:45:02,874 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:02,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:02,875 INFO L85 PathProgramCache]: Analyzing trace with hash 142434360, now seen corresponding path program 1 times [2024-11-28 04:45:02,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:02,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635394809] [2024-11-28 04:45:02,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:02,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 04:45:03,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:03,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635394809] [2024-11-28 04:45:03,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635394809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:03,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:03,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:45:03,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545958763] [2024-11-28 04:45:03,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:03,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:03,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:03,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:03,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:03,902 INFO L87 Difference]: Start difference. First operand 275 states and 357 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 04:45:07,931 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 [] [2024-11-28 04:45:08,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:08,089 INFO L93 Difference]: Finished difference Result 275 states and 357 transitions. [2024-11-28 04:45:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:45:08,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 118 [2024-11-28 04:45:08,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:08,091 INFO L225 Difference]: With dead ends: 275 [2024-11-28 04:45:08,091 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 04:45:08,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:08,094 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 68 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:08,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 164 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 04:45:08,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 04:45:08,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 04:45:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 04:45:08,097 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 118 [2024-11-28 04:45:08,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:08,097 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:45:08,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 04:45:08,097 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 04:45:08,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 04:45:08,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:45:08,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:45:08,104 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:08,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 04:45:10,179 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:45:10,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:45:10 BoogieIcfgContainer [2024-11-28 04:45:10,193 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:45:10,194 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:45:10,194 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:45:10,194 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:45:10,195 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:43:51" (3/4) ... [2024-11-28 04:45:10,197 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 04:45:10,204 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_error [2024-11-28 04:45:10,204 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_stop [2024-11-28 04:45:10,205 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_module_put [2024-11-28 04:45:10,205 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_init_zalloc [2024-11-28 04:45:10,205 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-28 04:45:10,205 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_memset [2024-11-28 04:45:10,205 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.meminit [2024-11-28 04:45:10,219 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2024-11-28 04:45:10,220 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-28 04:45:10,225 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-28 04:45:10,225 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-28 04:45:10,384 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:45:10,384 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:45:10,384 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:45:10,385 INFO L158 Benchmark]: Toolchain (without parser) took 85747.96ms. Allocated memory was 117.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 85.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 233.1MB. Max. memory is 16.1GB. [2024-11-28 04:45:10,386 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 167.8MB. Free memory is still 103.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:45:10,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1442.29ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 85.7MB in the beginning and 305.0MB in the end (delta: -219.3MB). Peak memory consumption was 73.6MB. Max. memory is 16.1GB. [2024-11-28 04:45:10,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.15ms. Allocated memory is still 352.3MB. Free memory was 305.0MB in the beginning and 301.4MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:45:10,388 INFO L158 Benchmark]: Boogie Preprocessor took 160.45ms. Allocated memory is still 352.3MB. Free memory was 301.4MB in the beginning and 296.1MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:45:10,388 INFO L158 Benchmark]: RCFGBuilder took 5556.61ms. Allocated memory is still 352.3MB. Free memory was 296.1MB in the beginning and 235.6MB in the end (delta: 60.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-11-28 04:45:10,389 INFO L158 Benchmark]: TraceAbstraction took 78289.64ms. Allocated memory was 352.3MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 235.1MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 151.1MB. Max. memory is 16.1GB. [2024-11-28 04:45:10,392 INFO L158 Benchmark]: Witness Printer took 190.98ms. Allocated memory is still 1.5GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 8.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:45:10,394 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 167.8MB. Free memory is still 103.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1442.29ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 85.7MB in the beginning and 305.0MB in the end (delta: -219.3MB). Peak memory consumption was 73.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.15ms. Allocated memory is still 352.3MB. Free memory was 305.0MB in the beginning and 301.4MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 160.45ms. Allocated memory is still 352.3MB. Free memory was 301.4MB in the beginning and 296.1MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 5556.61ms. Allocated memory is still 352.3MB. Free memory was 296.1MB in the beginning and 235.6MB in the end (delta: 60.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 78289.64ms. Allocated memory was 352.3MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 235.1MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 151.1MB. Max. memory is 16.1GB. * Witness Printer took 190.98ms. Allocated memory is still 1.5GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 8.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 6057]: Unsoundness Warning Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6057] - GenericResultAtLocation [Line: 6060]: Unsoundness Warning Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6060] - GenericResultAtLocation [Line: 6063]: Unsoundness Warning Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6063] - GenericResultAtLocation [Line: 6066]: Unsoundness Warning Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6066] - GenericResultAtLocation [Line: 6069]: Unsoundness Warning Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6069] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6264]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 76.1s, OverallIterations: 15, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 30.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 544 SdHoareTripleChecker+Valid, 30.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 543 mSDsluCounter, 4063 SdHoareTripleChecker+Invalid, 29.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2475 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 319 IncrementalHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 1588 mSDtfsCounter, 319 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 673 GetRequests, 613 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=383occurred in iteration=10, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 50 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 12.9s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 1796 NumberOfCodeBlocks, 1754 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1857 ConstructedInterpolants, 0 QuantifiedInterpolants, 3635 SizeOfPredicates, 9 NumberOfNonLiveVariables, 8397 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 22 InterpolantComputations, 14 PerfectInterpolantSequences, 975/1014 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 04:45:10,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6af23b-1e23-4f90-90a9-aa50fca54a9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE