./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd --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 8cac8187c908783c6da6279dd5046ee81ec4fe5bbaff4f4fff097111c44b0a84 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:48:14,884 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:48:14,981 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-13 14:48:14,989 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:48:14,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:48:15,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:48:15,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:48:15,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:48:15,036 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:48:15,036 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:48:15,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:48:15,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:48:15,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:48:15,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:48:15,037 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:48:15,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:48:15,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:48:15,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:48:15,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:48:15,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:48:15,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:48:15,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:48:15,037 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:48:15,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:48:15,038 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:48:15,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:48:15,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:48:15,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:48:15,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:48:15,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:48:15,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:48:15,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:48:15,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:48:15,042 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:48:15,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:48:15,042 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:48:15,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:48:15,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:48:15,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:48:15,042 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_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> 8cac8187c908783c6da6279dd5046ee81ec4fe5bbaff4f4fff097111c44b0a84 [2024-11-13 14:48:15,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:48:15,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:48:15,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:48:15,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:48:15,392 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:48:15,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-13 14:48:17,419 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:48:17,949 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:48:17,950 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i [2024-11-13 14:48:17,984 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/data/f31737c66/3d2bb39c81fa46efa67a0d8f3a26dcc9/FLAG82c10a044 [2024-11-13 14:48:18,499 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/data/f31737c66/3d2bb39c81fa46efa67a0d8f3a26dcc9 [2024-11-13 14:48:18,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:48:18,502 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:48:18,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:48:18,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:48:18,509 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:48:18,510 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:48:18" (1/1) ... [2024-11-13 14:48:18,511 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c339664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:18, skipping insertion in model container [2024-11-13 14:48:18,511 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:48:18" (1/1) ... [2024-11-13 14:48:18,579 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:48:18,918 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1764] [2024-11-13 14:48:18,919 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1765-1766] [2024-11-13 14:48:19,025 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_9e482323-dfa7-477d-8a35-01e65f337b74/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i[52456,52469] [2024-11-13 14:48:19,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:48:19,264 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:48:19,328 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1764] [2024-11-13 14:48:19,328 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1765-1766] [2024-11-13 14:48:19,335 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [1855] [2024-11-13 14:48:19,337 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [1858] [2024-11-13 14:48:19,338 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [1861] [2024-11-13 14:48:19,339 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [1864] [2024-11-13 14:48:19,342 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [1902] [2024-11-13 14:48:19,355 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_9e482323-dfa7-477d-8a35-01e65f337b74/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i[52456,52469] [2024-11-13 14:48:19,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:48:19,491 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:48:19,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19 WrapperNode [2024-11-13 14:48:19,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:48:19,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:48:19,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:48:19,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:48:19,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19" (1/1) ... [2024-11-13 14:48:19,560 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19" (1/1) ... [2024-11-13 14:48:19,635 INFO L138 Inliner]: procedures = 114, calls = 293, calls flagged for inlining = 50, calls inlined = 38, statements flattened = 960 [2024-11-13 14:48:19,635 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:48:19,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:48:19,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:48:19,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:48:19,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19" (1/1) ... [2024-11-13 14:48:19,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19" (1/1) ... [2024-11-13 14:48:19,655 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19" (1/1) ... [2024-11-13 14:48:19,735 INFO L175 MemorySlicer]: Split 79 memory accesses to 14 slices as follows [2, 1, 5, 4, 1, 1, 24, 4, 10, 1, 12, 0, 12, 2]. 30 percent of accesses are in the largest equivalence class. The 55 initializations are split as follows [2, 0, 0, 4, 1, 1, 18, 4, 10, 1, 12, 0, 1, 1]. The 9 writes are split as follows [0, 1, 3, 0, 0, 0, 1, 0, 0, 0, 0, 0, 4, 0]. [2024-11-13 14:48:19,736 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19" (1/1) ... [2024-11-13 14:48:19,736 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19" (1/1) ... [2024-11-13 14:48:19,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19" (1/1) ... [2024-11-13 14:48:19,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19" (1/1) ... [2024-11-13 14:48:19,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19" (1/1) ... [2024-11-13 14:48:19,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19" (1/1) ... [2024-11-13 14:48:19,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:48:19,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:48:19,837 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:48:19,837 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:48:19,840 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19" (1/1) ... [2024-11-13 14:48:19,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:48:19,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:48:19,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:48:19,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:48:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure _torture_stop_kthread [2024-11-13 14:48:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure _torture_stop_kthread [2024-11-13 14:48:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_busted_write_lock [2024-11-13 14:48:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_busted_write_lock [2024-11-13 14:48:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-13 14:48:19,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-13 14:48:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:48:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:48:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:48:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 14:48:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 14:48:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-13 14:48:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-13 14:48:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-13 14:48:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-13 14:48:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-13 14:48:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-13 14:48:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-13 14:48:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-13 14:48:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-13 14:48:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_delay [2024-11-13 14:48:19,908 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_delay [2024-11-13 14:48:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2024-11-13 14:48:19,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2024-11-13 14:48:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-13 14:48:19,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-13 14:48:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure _torture_create_kthread [2024-11-13 14:48:19,908 INFO L138 BoogieDeclarations]: Found implementation of procedure _torture_create_kthread [2024-11-13 14:48:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_lock [2024-11-13 14:48:19,908 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_lock [2024-11-13 14:48:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2024-11-13 14:48:19,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2024-11-13 14:48:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-13 14:48:19,909 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_spin_write_unlock_irq [2024-11-13 14:48:19,909 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_spin_write_unlock_irq [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-13 14:48:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-13 14:48:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-13 14:48:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-13 14:48:19,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-13 14:48:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure torture_random [2024-11-13 14:48:19,910 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_random [2024-11-13 14:48:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_cleanup [2024-11-13 14:48:19,910 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_cleanup [2024-11-13 14:48:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure torture_init_end [2024-11-13 14:48:19,910 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_init_end [2024-11-13 14:48:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 14:48:19,910 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 14:48:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:48:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2024-11-13 14:48:19,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2024-11-13 14:48:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2024-11-13 14:48:19,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-13 14:48:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_stats_print [2024-11-13 14:48:19,915 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_stats_print [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-13 14:48:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2024-11-13 14:48:19,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_lock_irq [2024-11-13 14:48:19,916 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_lock_irq [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-13 14:48:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-13 14:48:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-13 14:48:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-13 14:48:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-13 14:48:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_busted_write_delay [2024-11-13 14:48:19,917 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_busted_write_delay [2024-11-13 14:48:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-13 14:48:19,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-13 14:48:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-11-13 14:48:19,917 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-11-13 14:48:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_busted_write_unlock [2024-11-13 14:48:19,917 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_busted_write_unlock [2024-11-13 14:48:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_print_module_parms [2024-11-13 14:48:19,917 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_print_module_parms [2024-11-13 14:48:19,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:48:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:48:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:48:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 14:48:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 14:48:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-13 14:48:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-13 14:48:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-13 14:48:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-13 14:48:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-13 14:48:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-13 14:48:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-13 14:48:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-13 14:48:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-13 14:48:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-13 14:48:19,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-13 14:48:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_unlock [2024-11-13 14:48:19,920 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_unlock [2024-11-13 14:48:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:48:19,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:48:20,257 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:48:20,260 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:48:20,292 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-13 14:48:21,540 INFO L? ?]: Removed 301 outVars from TransFormulas that were not future-live. [2024-11-13 14:48:21,540 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:48:21,567 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:48:21,570 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:48:21,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:48:21 BoogieIcfgContainer [2024-11-13 14:48:21,571 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:48:21,574 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:48:21,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:48:21,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:48:21,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:48:18" (1/3) ... [2024-11-13 14:48:21,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b07ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:48:21, skipping insertion in model container [2024-11-13 14:48:21,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:19" (2/3) ... [2024-11-13 14:48:21,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b07ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:48:21, skipping insertion in model container [2024-11-13 14:48:21,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:48:21" (3/3) ... [2024-11-13 14:48:21,586 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i [2024-11-13 14:48:21,604 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:48:21,614 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i that has 29 procedures, 381 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 14:48:21,708 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:48:21,726 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;@6e786532, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:48:21,726 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:48:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 281 states have (on average 1.387900355871886) internal successors, (390), 294 states have internal predecessors, (390), 70 states have call successors, (70), 28 states have call predecessors, (70), 27 states have return successors, (65), 62 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-13 14:48:21,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 14:48:21,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:21,749 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:21,749 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:21,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:21,754 INFO L85 PathProgramCache]: Analyzing trace with hash 799306126, now seen corresponding path program 1 times [2024-11-13 14:48:21,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:21,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212901399] [2024-11-13 14:48:21,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:21,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:22,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:22,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:22,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:22,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 14:48:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:48:22,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:22,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212901399] [2024-11-13 14:48:22,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212901399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:22,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:22,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:48:22,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179415023] [2024-11-13 14:48:22,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:22,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:48:22,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:22,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:48:22,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:48:22,548 INFO L87 Difference]: Start difference. First operand has 380 states, 281 states have (on average 1.387900355871886) internal successors, (390), 294 states have internal predecessors, (390), 70 states have call successors, (70), 28 states have call predecessors, (70), 27 states have return successors, (65), 62 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:48:24,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:24,240 INFO L93 Difference]: Finished difference Result 1117 states and 1567 transitions. [2024-11-13 14:48:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:48:24,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2024-11-13 14:48:24,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:24,267 INFO L225 Difference]: With dead ends: 1117 [2024-11-13 14:48:24,267 INFO L226 Difference]: Without dead ends: 622 [2024-11-13 14:48:24,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:48:24,280 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 730 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:24,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 736 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 14:48:24,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-11-13 14:48:24,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 565. [2024-11-13 14:48:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 428 states have (on average 1.3644859813084111) internal successors, (584), 436 states have internal predecessors, (584), 95 states have call successors, (95), 46 states have call predecessors, (95), 41 states have return successors, (90), 87 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-13 14:48:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 769 transitions. [2024-11-13 14:48:24,441 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 769 transitions. Word has length 48 [2024-11-13 14:48:24,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:24,442 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 769 transitions. [2024-11-13 14:48:24,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:48:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 769 transitions. [2024-11-13 14:48:24,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 14:48:24,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:24,450 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:24,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:48:24,451 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:24,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:24,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1808027181, now seen corresponding path program 1 times [2024-11-13 14:48:24,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:24,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331964357] [2024-11-13 14:48:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:24,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:24,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:24,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:24,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:24,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:48:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:24,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:48:24,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:24,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331964357] [2024-11-13 14:48:24,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331964357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:24,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:24,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:48:24,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785622504] [2024-11-13 14:48:24,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:24,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:48:24,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:24,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:48:24,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:48:24,837 INFO L87 Difference]: Start difference. First operand 565 states and 769 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 14:48:25,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:25,757 INFO L93 Difference]: Finished difference Result 1164 states and 1593 transitions. [2024-11-13 14:48:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:48:25,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2024-11-13 14:48:25,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:25,764 INFO L225 Difference]: With dead ends: 1164 [2024-11-13 14:48:25,764 INFO L226 Difference]: Without dead ends: 619 [2024-11-13 14:48:25,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:48:25,767 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 593 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:25,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 531 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:48:25,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-11-13 14:48:25,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 565. [2024-11-13 14:48:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 428 states have (on average 1.3621495327102804) internal successors, (583), 436 states have internal predecessors, (583), 95 states have call successors, (95), 46 states have call predecessors, (95), 41 states have return successors, (90), 87 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-13 14:48:25,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 768 transitions. [2024-11-13 14:48:25,840 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 768 transitions. Word has length 54 [2024-11-13 14:48:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:25,841 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 768 transitions. [2024-11-13 14:48:25,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 14:48:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 768 transitions. [2024-11-13 14:48:25,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 14:48:25,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:25,846 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:25,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:48:25,846 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:25,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash 856967870, now seen corresponding path program 1 times [2024-11-13 14:48:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:25,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578419585] [2024-11-13 14:48:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:25,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:26,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:26,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:26,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:26,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-13 14:48:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:48:26,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:26,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578419585] [2024-11-13 14:48:26,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578419585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:26,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:26,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:48:26,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577683111] [2024-11-13 14:48:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:26,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:48:26,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:26,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:48:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:48:26,129 INFO L87 Difference]: Start difference. First operand 565 states and 768 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:48:26,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:26,929 INFO L93 Difference]: Finished difference Result 624 states and 851 transitions. [2024-11-13 14:48:26,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:48:26,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 57 [2024-11-13 14:48:26,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:26,934 INFO L225 Difference]: With dead ends: 624 [2024-11-13 14:48:26,934 INFO L226 Difference]: Without dead ends: 620 [2024-11-13 14:48:26,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:48:26,936 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 159 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:26,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 825 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:48:26,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2024-11-13 14:48:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 566. [2024-11-13 14:48:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.358974358974359) internal successors, (583), 437 states have internal predecessors, (583), 95 states have call successors, (95), 46 states have call predecessors, (95), 41 states have return successors, (90), 87 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-13 14:48:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 768 transitions. [2024-11-13 14:48:26,985 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 768 transitions. Word has length 57 [2024-11-13 14:48:26,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:26,985 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 768 transitions. [2024-11-13 14:48:26,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:48:26,985 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 768 transitions. [2024-11-13 14:48:26,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 14:48:26,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:26,988 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:26,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:48:26,988 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:26,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:26,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1070037838, now seen corresponding path program 1 times [2024-11-13 14:48:26,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:26,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277393432] [2024-11-13 14:48:26,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:27,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:27,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:27,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:27,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-13 14:48:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:48:27,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:27,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277393432] [2024-11-13 14:48:27,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277393432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:27,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:27,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:48:27,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716276089] [2024-11-13 14:48:27,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:27,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:48:27,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:27,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:48:27,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:48:27,281 INFO L87 Difference]: Start difference. First operand 566 states and 768 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:48:28,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:28,724 INFO L93 Difference]: Finished difference Result 1689 states and 2353 transitions. [2024-11-13 14:48:28,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:48:28,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2024-11-13 14:48:28,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:28,738 INFO L225 Difference]: With dead ends: 1689 [2024-11-13 14:48:28,739 INFO L226 Difference]: Without dead ends: 1112 [2024-11-13 14:48:28,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:48:28,744 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 687 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:28,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1066 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:48:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2024-11-13 14:48:28,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1008. [2024-11-13 14:48:28,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 774 states have (on average 1.3888888888888888) internal successors, (1075), 790 states have internal predecessors, (1075), 162 states have call successors, (162), 71 states have call predecessors, (162), 71 states have return successors, (166), 156 states have call predecessors, (166), 157 states have call successors, (166) [2024-11-13 14:48:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1403 transitions. [2024-11-13 14:48:28,933 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1403 transitions. Word has length 59 [2024-11-13 14:48:28,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:28,934 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1403 transitions. [2024-11-13 14:48:28,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:48:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1403 transitions. [2024-11-13 14:48:28,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 14:48:28,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:28,939 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:28,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:48:28,939 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:28,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:28,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1679775061, now seen corresponding path program 1 times [2024-11-13 14:48:28,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:28,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700954971] [2024-11-13 14:48:28,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:28,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:29,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:29,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:29,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:29,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 14:48:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:29,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:29,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-13 14:48:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:48:29,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:29,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700954971] [2024-11-13 14:48:29,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700954971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:29,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:29,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:48:29,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773447821] [2024-11-13 14:48:29,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:29,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:48:29,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:29,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:48:29,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:48:29,194 INFO L87 Difference]: Start difference. First operand 1008 states and 1403 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:48:31,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:31,107 INFO L93 Difference]: Finished difference Result 3014 states and 4195 transitions. [2024-11-13 14:48:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:48:31,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2024-11-13 14:48:31,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:31,119 INFO L225 Difference]: With dead ends: 3014 [2024-11-13 14:48:31,119 INFO L226 Difference]: Without dead ends: 2026 [2024-11-13 14:48:31,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:48:31,124 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 1322 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:31,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 959 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 14:48:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2024-11-13 14:48:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1789. [2024-11-13 14:48:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1789 states, 1378 states have (on average 1.3911465892597967) internal successors, (1917), 1406 states have internal predecessors, (1917), 283 states have call successors, (283), 130 states have call predecessors, (283), 127 states have return successors, (282), 272 states have call predecessors, (282), 278 states have call successors, (282) [2024-11-13 14:48:31,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2482 transitions. [2024-11-13 14:48:31,330 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2482 transitions. Word has length 74 [2024-11-13 14:48:31,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:31,330 INFO L471 AbstractCegarLoop]: Abstraction has 1789 states and 2482 transitions. [2024-11-13 14:48:31,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:48:31,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2482 transitions. [2024-11-13 14:48:31,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 14:48:31,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:31,336 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1] [2024-11-13 14:48:31,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:48:31,336 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:31,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:31,337 INFO L85 PathProgramCache]: Analyzing trace with hash -78255652, now seen corresponding path program 1 times [2024-11-13 14:48:31,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:31,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737967085] [2024-11-13 14:48:31,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:31,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:31,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:31,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:31,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:31,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:48:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:31,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:31,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:48:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 14:48:31,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:31,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737967085] [2024-11-13 14:48:31,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737967085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:31,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:31,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:48:31,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580259343] [2024-11-13 14:48:31,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:31,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:48:31,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:31,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:48:31,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:48:31,507 INFO L87 Difference]: Start difference. First operand 1789 states and 2482 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:48:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:32,659 INFO L93 Difference]: Finished difference Result 3760 states and 5234 transitions. [2024-11-13 14:48:32,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:48:32,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 78 [2024-11-13 14:48:32,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:32,672 INFO L225 Difference]: With dead ends: 3760 [2024-11-13 14:48:32,672 INFO L226 Difference]: Without dead ends: 1991 [2024-11-13 14:48:32,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:48:32,678 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 512 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:32,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 965 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:48:32,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2024-11-13 14:48:32,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1793. [2024-11-13 14:48:32,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1382 states have (on average 1.390014471780029) internal successors, (1921), 1410 states have internal predecessors, (1921), 283 states have call successors, (283), 130 states have call predecessors, (283), 127 states have return successors, (282), 272 states have call predecessors, (282), 278 states have call successors, (282) [2024-11-13 14:48:32,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2486 transitions. [2024-11-13 14:48:32,860 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2486 transitions. Word has length 78 [2024-11-13 14:48:32,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:32,860 INFO L471 AbstractCegarLoop]: Abstraction has 1793 states and 2486 transitions. [2024-11-13 14:48:32,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:48:32,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2486 transitions. [2024-11-13 14:48:32,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 14:48:32,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:32,866 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1] [2024-11-13 14:48:32,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:48:32,866 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:32,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:32,867 INFO L85 PathProgramCache]: Analyzing trace with hash -93774370, now seen corresponding path program 1 times [2024-11-13 14:48:32,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:32,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943197445] [2024-11-13 14:48:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:32,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:33,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:33,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:33,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:33,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:48:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:33,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:33,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 14:48:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 14:48:33,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:33,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943197445] [2024-11-13 14:48:33,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943197445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:33,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:33,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:48:33,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853228274] [2024-11-13 14:48:33,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:33,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:48:33,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:33,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:48:33,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:48:33,057 INFO L87 Difference]: Start difference. First operand 1793 states and 2486 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:48:34,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:34,338 INFO L93 Difference]: Finished difference Result 3776 states and 5250 transitions. [2024-11-13 14:48:34,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:48:34,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 78 [2024-11-13 14:48:34,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:34,349 INFO L225 Difference]: With dead ends: 3776 [2024-11-13 14:48:34,349 INFO L226 Difference]: Without dead ends: 1943 [2024-11-13 14:48:34,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:48:34,355 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 497 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:34,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1209 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:48:34,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2024-11-13 14:48:34,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1741. [2024-11-13 14:48:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1350 states have (on average 1.3903703703703705) internal successors, (1877), 1378 states have internal predecessors, (1877), 263 states have call successors, (263), 130 states have call predecessors, (263), 127 states have return successors, (262), 252 states have call predecessors, (262), 258 states have call successors, (262) [2024-11-13 14:48:34,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2402 transitions. [2024-11-13 14:48:34,523 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2402 transitions. Word has length 78 [2024-11-13 14:48:34,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:34,524 INFO L471 AbstractCegarLoop]: Abstraction has 1741 states and 2402 transitions. [2024-11-13 14:48:34,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:48:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2402 transitions. [2024-11-13 14:48:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:48:34,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:34,526 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:34,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:48:34,526 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:34,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:34,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1018381759, now seen corresponding path program 1 times [2024-11-13 14:48:34,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:34,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130520747] [2024-11-13 14:48:34,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:34,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:34,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:34,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:34,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:34,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 14:48:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:34,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:34,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-13 14:48:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:48:34,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:34,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130520747] [2024-11-13 14:48:34,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130520747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:34,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:34,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:48:34,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70328445] [2024-11-13 14:48:34,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:34,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:48:34,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:34,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:48:34,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:48:34,704 INFO L87 Difference]: Start difference. First operand 1741 states and 2402 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:48:36,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:36,351 INFO L93 Difference]: Finished difference Result 5282 states and 7290 transitions. [2024-11-13 14:48:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:48:36,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 80 [2024-11-13 14:48:36,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:36,372 INFO L225 Difference]: With dead ends: 5282 [2024-11-13 14:48:36,372 INFO L226 Difference]: Without dead ends: 3561 [2024-11-13 14:48:36,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:48:36,378 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 966 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:36,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1009 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:48:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2024-11-13 14:48:36,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3132. [2024-11-13 14:48:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 2426 states have (on average 1.3845836768342952) internal successors, (3359), 2478 states have internal predecessors, (3359), 468 states have call successors, (468), 238 states have call predecessors, (468), 237 states have return successors, (471), 451 states have call predecessors, (471), 463 states have call successors, (471) [2024-11-13 14:48:36,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 4298 transitions. [2024-11-13 14:48:36,668 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 4298 transitions. Word has length 80 [2024-11-13 14:48:36,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:36,669 INFO L471 AbstractCegarLoop]: Abstraction has 3132 states and 4298 transitions. [2024-11-13 14:48:36,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:48:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 4298 transitions. [2024-11-13 14:48:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-13 14:48:36,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:36,677 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:36,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:48:36,677 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:36,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:36,677 INFO L85 PathProgramCache]: Analyzing trace with hash 243723226, now seen corresponding path program 1 times [2024-11-13 14:48:36,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:36,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22102139] [2024-11-13 14:48:36,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:36,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:36,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:36,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:36,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:36,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:48:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:36,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:36,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 14:48:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:36,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:36,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:36,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-13 14:48:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:36,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-13 14:48:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:36,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-13 14:48:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:37,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:37,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-11-13 14:48:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:48:37,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:37,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22102139] [2024-11-13 14:48:37,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22102139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:37,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:37,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:48:37,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425002891] [2024-11-13 14:48:37,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:37,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:48:37,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:37,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:48:37,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:48:37,013 INFO L87 Difference]: Start difference. First operand 3132 states and 4298 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-13 14:48:39,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:39,536 INFO L93 Difference]: Finished difference Result 8537 states and 11810 transitions. [2024-11-13 14:48:39,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:48:39,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2024-11-13 14:48:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:39,572 INFO L225 Difference]: With dead ends: 8537 [2024-11-13 14:48:39,572 INFO L226 Difference]: Without dead ends: 5425 [2024-11-13 14:48:39,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:48:39,585 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 1168 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:39,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 1634 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 14:48:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5425 states. [2024-11-13 14:48:40,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5425 to 4704. [2024-11-13 14:48:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4704 states, 3662 states have (on average 1.3798470780993992) internal successors, (5053), 3742 states have internal predecessors, (5053), 687 states have call successors, (687), 353 states have call predecessors, (687), 354 states have return successors, (694), 664 states have call predecessors, (694), 682 states have call successors, (694) [2024-11-13 14:48:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 6434 transitions. [2024-11-13 14:48:40,066 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 6434 transitions. Word has length 129 [2024-11-13 14:48:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:40,067 INFO L471 AbstractCegarLoop]: Abstraction has 4704 states and 6434 transitions. [2024-11-13 14:48:40,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-13 14:48:40,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 6434 transitions. [2024-11-13 14:48:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-13 14:48:40,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:40,074 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:40,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:48:40,074 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:40,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:40,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1322906640, now seen corresponding path program 1 times [2024-11-13 14:48:40,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:40,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986974628] [2024-11-13 14:48:40,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:40,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:48:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 14:48:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-13 14:48:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-13 14:48:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-13 14:48:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-13 14:48:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:48:40,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:40,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986974628] [2024-11-13 14:48:40,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986974628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:40,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:40,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:48:40,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843051244] [2024-11-13 14:48:40,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:40,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:48:40,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:40,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:48:40,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:48:40,342 INFO L87 Difference]: Start difference. First operand 4704 states and 6434 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-13 14:48:43,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:43,550 INFO L93 Difference]: Finished difference Result 12798 states and 17655 transitions. [2024-11-13 14:48:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:48:43,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2024-11-13 14:48:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:43,589 INFO L225 Difference]: With dead ends: 12798 [2024-11-13 14:48:43,589 INFO L226 Difference]: Without dead ends: 8114 [2024-11-13 14:48:43,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:48:43,602 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 961 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:43,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 1939 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 14:48:43,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8114 states. [2024-11-13 14:48:44,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8114 to 7055. [2024-11-13 14:48:44,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7055 states, 5518 states have (on average 1.3754983689742661) internal successors, (7590), 5640 states have internal predecessors, (7590), 1008 states have call successors, (1008), 524 states have call predecessors, (1008), 528 states have return successors, (1021), 976 states have call predecessors, (1021), 1003 states have call successors, (1021) [2024-11-13 14:48:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7055 states to 7055 states and 9619 transitions. [2024-11-13 14:48:44,352 INFO L78 Accepts]: Start accepts. Automaton has 7055 states and 9619 transitions. Word has length 135 [2024-11-13 14:48:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:44,353 INFO L471 AbstractCegarLoop]: Abstraction has 7055 states and 9619 transitions. [2024-11-13 14:48:44,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-13 14:48:44,353 INFO L276 IsEmpty]: Start isEmpty. Operand 7055 states and 9619 transitions. [2024-11-13 14:48:44,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-13 14:48:44,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:44,363 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:44,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:48:44,364 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:44,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:44,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1780472740, now seen corresponding path program 1 times [2024-11-13 14:48:44,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983829705] [2024-11-13 14:48:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:44,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:48:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 14:48:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-13 14:48:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-13 14:48:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-13 14:48:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-13 14:48:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:44,762 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:48:44,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:44,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983829705] [2024-11-13 14:48:44,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983829705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:48:44,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435314822] [2024-11-13 14:48:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:44,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:48:44,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:48:44,765 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:48:44,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:48:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:45,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:48:45,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:48:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 14:48:45,334 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:48:45,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435314822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:45,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:48:45,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-13 14:48:45,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601654541] [2024-11-13 14:48:45,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:45,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:48:45,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:45,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:48:45,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:48:45,336 INFO L87 Difference]: Start difference. First operand 7055 states and 9619 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-13 14:48:45,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:45,871 INFO L93 Difference]: Finished difference Result 14198 states and 19377 transitions. [2024-11-13 14:48:45,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:48:45,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 139 [2024-11-13 14:48:45,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:45,906 INFO L225 Difference]: With dead ends: 14198 [2024-11-13 14:48:45,906 INFO L226 Difference]: Without dead ends: 7001 [2024-11-13 14:48:45,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:48:45,923 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 1 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:45,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1891 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:48:45,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7001 states. [2024-11-13 14:48:46,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7001 to 7001. [2024-11-13 14:48:46,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 5464 states have (on average 1.3726207906295753) internal successors, (7500), 5595 states have internal predecessors, (7500), 1008 states have call successors, (1008), 524 states have call predecessors, (1008), 528 states have return successors, (1012), 967 states have call predecessors, (1012), 994 states have call successors, (1012) [2024-11-13 14:48:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 9520 transitions. [2024-11-13 14:48:46,762 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 9520 transitions. Word has length 139 [2024-11-13 14:48:46,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:46,762 INFO L471 AbstractCegarLoop]: Abstraction has 7001 states and 9520 transitions. [2024-11-13 14:48:46,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-13 14:48:46,764 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 9520 transitions. [2024-11-13 14:48:46,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-13 14:48:46,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:46,772 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:46,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:48:46,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:48:46,973 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:46,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1790675275, now seen corresponding path program 1 times [2024-11-13 14:48:46,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:46,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813101442] [2024-11-13 14:48:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:46,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:48:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 14:48:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-13 14:48:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-13 14:48:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-13 14:48:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-13 14:48:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 14:48:47,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:47,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813101442] [2024-11-13 14:48:47,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813101442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:47,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:47,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:48:47,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189755906] [2024-11-13 14:48:47,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:47,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:48:47,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:47,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:48:47,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:48:47,294 INFO L87 Difference]: Start difference. First operand 7001 states and 9520 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-13 14:48:49,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:49,232 INFO L93 Difference]: Finished difference Result 14960 states and 20448 transitions. [2024-11-13 14:48:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:48:49,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 141 [2024-11-13 14:48:49,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:49,271 INFO L225 Difference]: With dead ends: 14960 [2024-11-13 14:48:49,271 INFO L226 Difference]: Without dead ends: 7979 [2024-11-13 14:48:49,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:48:49,338 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 899 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:49,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 1062 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:48:49,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7979 states. [2024-11-13 14:48:49,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7979 to 6965. [2024-11-13 14:48:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6965 states, 5428 states have (on average 1.3684598378776713) internal successors, (7428), 5559 states have internal predecessors, (7428), 1008 states have call successors, (1008), 524 states have call predecessors, (1008), 528 states have return successors, (1012), 967 states have call predecessors, (1012), 994 states have call successors, (1012) [2024-11-13 14:48:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6965 states to 6965 states and 9448 transitions. [2024-11-13 14:48:49,976 INFO L78 Accepts]: Start accepts. Automaton has 6965 states and 9448 transitions. Word has length 141 [2024-11-13 14:48:49,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:49,977 INFO L471 AbstractCegarLoop]: Abstraction has 6965 states and 9448 transitions. [2024-11-13 14:48:49,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-13 14:48:49,977 INFO L276 IsEmpty]: Start isEmpty. Operand 6965 states and 9448 transitions. [2024-11-13 14:48:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-13 14:48:49,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:49,988 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:49,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:48:49,988 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:49,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:49,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1600459861, now seen corresponding path program 1 times [2024-11-13 14:48:49,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:49,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925272053] [2024-11-13 14:48:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:49,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:48:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 14:48:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-13 14:48:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-13 14:48:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-13 14:48:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-11-13 14:48:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:48:50,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:50,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925272053] [2024-11-13 14:48:50,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925272053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:48:50,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127974053] [2024-11-13 14:48:50,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:50,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:48:50,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:48:50,347 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:48:50,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:48:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:50,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:48:50,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:48:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:48:51,036 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:48:51,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127974053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:51,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:48:51,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2024-11-13 14:48:51,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838030605] [2024-11-13 14:48:51,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:51,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:48:51,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:51,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:48:51,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:48:51,039 INFO L87 Difference]: Start difference. First operand 6965 states and 9448 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-13 14:48:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:52,650 INFO L93 Difference]: Finished difference Result 20826 states and 28263 transitions. [2024-11-13 14:48:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:48:52,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 142 [2024-11-13 14:48:52,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:52,737 INFO L225 Difference]: With dead ends: 20826 [2024-11-13 14:48:52,737 INFO L226 Difference]: Without dead ends: 20791 [2024-11-13 14:48:52,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:48:52,749 INFO L432 NwaCegarLoop]: 850 mSDtfsCounter, 866 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:52,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 1649 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:48:52,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20791 states. [2024-11-13 14:48:54,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20791 to 20641. [2024-11-13 14:48:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20641 states, 16064 states have (on average 1.3723232071713147) internal successors, (22045), 16457 states have internal predecessors, (22045), 3000 states have call successors, (3000), 1554 states have call predecessors, (3000), 1576 states have return successors, (3022), 2887 states have call predecessors, (3022), 2968 states have call successors, (3022) [2024-11-13 14:48:54,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20641 states to 20641 states and 28067 transitions. [2024-11-13 14:48:54,362 INFO L78 Accepts]: Start accepts. Automaton has 20641 states and 28067 transitions. Word has length 142 [2024-11-13 14:48:54,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:54,362 INFO L471 AbstractCegarLoop]: Abstraction has 20641 states and 28067 transitions. [2024-11-13 14:48:54,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-13 14:48:54,363 INFO L276 IsEmpty]: Start isEmpty. Operand 20641 states and 28067 transitions. [2024-11-13 14:48:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-13 14:48:54,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:54,388 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:54,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:48:54,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e482323-dfa7-477d-8a35-01e65f337b74/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:48:54,593 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:54,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:54,594 INFO L85 PathProgramCache]: Analyzing trace with hash -617781953, now seen corresponding path program 1 times [2024-11-13 14:48:54,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:54,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446612237] [2024-11-13 14:48:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:54,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:48:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 14:48:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-13 14:48:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-13 14:48:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-13 14:48:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-11-13 14:48:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 14:48:54,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:54,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446612237] [2024-11-13 14:48:54,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446612237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:54,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:54,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:48:54,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256834200] [2024-11-13 14:48:54,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:54,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:48:54,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:54,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:48:54,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:48:54,938 INFO L87 Difference]: Start difference. First operand 20641 states and 28067 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-13 14:48:57,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:57,176 INFO L93 Difference]: Finished difference Result 27346 states and 37410 transitions. [2024-11-13 14:48:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:48:57,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 151 [2024-11-13 14:48:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:57,209 INFO L225 Difference]: With dead ends: 27346 [2024-11-13 14:48:57,210 INFO L226 Difference]: Without dead ends: 6538 [2024-11-13 14:48:57,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:48:57,251 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 1048 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:57,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 932 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 14:48:57,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6538 states. [2024-11-13 14:48:57,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6538 to 6358. [2024-11-13 14:48:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 5090 states have (on average 1.4011787819253438) internal successors, (7132), 5204 states have internal predecessors, (7132), 804 states have call successors, (804), 468 states have call predecessors, (804), 463 states have return successors, (799), 790 states have call predecessors, (799), 799 states have call successors, (799) [2024-11-13 14:48:57,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 8735 transitions. [2024-11-13 14:48:57,827 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 8735 transitions. Word has length 151 [2024-11-13 14:48:57,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:57,828 INFO L471 AbstractCegarLoop]: Abstraction has 6358 states and 8735 transitions. [2024-11-13 14:48:57,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-13 14:48:57,828 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 8735 transitions. [2024-11-13 14:48:57,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-13 14:48:57,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:57,846 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:57,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:48:57,846 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:57,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:57,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2059787437, now seen corresponding path program 1 times [2024-11-13 14:48:57,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:57,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049370631] [2024-11-13 14:48:57,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:57,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:48:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:48:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:48:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 14:48:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:48:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-13 14:48:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-13 14:48:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-13 14:48:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:48:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-11-13 14:48:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-13 14:48:58,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:58,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049370631] [2024-11-13 14:48:58,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049370631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:58,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:58,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:48:58,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45301817] [2024-11-13 14:48:58,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:58,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:48:58,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:58,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:48:58,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:48:58,339 INFO L87 Difference]: Start difference. First operand 6358 states and 8735 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-13 14:49:00,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:49:00,788 INFO L93 Difference]: Finished difference Result 12921 states and 17780 transitions. [2024-11-13 14:49:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:49:00,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 151 [2024-11-13 14:49:00,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:49:00,826 INFO L225 Difference]: With dead ends: 12921 [2024-11-13 14:49:00,827 INFO L226 Difference]: Without dead ends: 6583 [2024-11-13 14:49:00,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:49:00,844 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 696 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:49:00,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 999 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 14:49:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2024-11-13 14:49:01,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6361. [2024-11-13 14:49:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6361 states, 5093 states have (on average 1.4009424700569408) internal successors, (7135), 5207 states have internal predecessors, (7135), 804 states have call successors, (804), 468 states have call predecessors, (804), 463 states have return successors, (799), 790 states have call predecessors, (799), 799 states have call successors, (799) [2024-11-13 14:49:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6361 states to 6361 states and 8738 transitions. [2024-11-13 14:49:01,703 INFO L78 Accepts]: Start accepts. Automaton has 6361 states and 8738 transitions. Word has length 151 [2024-11-13 14:49:01,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:49:01,704 INFO L471 AbstractCegarLoop]: Abstraction has 6361 states and 8738 transitions. [2024-11-13 14:49:01,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-13 14:49:01,704 INFO L276 IsEmpty]: Start isEmpty. Operand 6361 states and 8738 transitions. [2024-11-13 14:49:01,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-13 14:49:01,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:49:01,719 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:49:01,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:49:01,719 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:49:01,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:49:01,720 INFO L85 PathProgramCache]: Analyzing trace with hash -948182894, now seen corresponding path program 1 times [2024-11-13 14:49:01,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:49:01,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684718542] [2024-11-13 14:49:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:49:01,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:49:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:49:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:49:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:49:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-13 14:49:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:49:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:49:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:49:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:49:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-13 14:49:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-13 14:49:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-13 14:49:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 14:49:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-11-13 14:49:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-13 14:49:02,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:49:02,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684718542] [2024-11-13 14:49:02,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684718542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:49:02,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:49:02,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 14:49:02,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857568099] [2024-11-13 14:49:02,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:49:02,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:49:02,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:49:02,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:49:02,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:49:02,380 INFO L87 Difference]: Start difference. First operand 6361 states and 8738 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-13 14:49:04,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:49:04,069 INFO L93 Difference]: Finished difference Result 7138 states and 9754 transitions. [2024-11-13 14:49:04,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:49:04,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 153 [2024-11-13 14:49:04,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:49:04,079 INFO L225 Difference]: With dead ends: 7138 [2024-11-13 14:49:04,079 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 14:49:04,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:49:04,088 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 659 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:49:04,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 689 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:49:04,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 14:49:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 14:49:04,090 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) [2024-11-13 14:49:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 14:49:04,097 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2024-11-13 14:49:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:49:04,098 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 14:49:04,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-13 14:49:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 14:49:04,099 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 14:49:04,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 14:49:04,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:49:04,105 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:49:04,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 14:50:02,803 WARN L286 SmtUtils]: Spent 58.62s on a formula simplification. DAG size of input: 111 DAG size of output: 102 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 14:50:52,675 WARN L286 SmtUtils]: Spent 49.87s on a formula simplification. DAG size of input: 109 DAG size of output: 93 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 14:51:42,063 WARN L286 SmtUtils]: Spent 49.39s on a formula simplification. DAG size of input: 109 DAG size of output: 93 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 14:52:33,266 WARN L286 SmtUtils]: Spent 51.20s on a formula simplification. DAG size of input: 111 DAG size of output: 102 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 14:53:24,662 WARN L286 SmtUtils]: Spent 51.40s on a formula simplification. DAG size of input: 111 DAG size of output: 102 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 14:54:16,069 WARN L286 SmtUtils]: Spent 51.41s on a formula simplification. DAG size of input: 111 DAG size of output: 102 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 14:55:07,621 WARN L286 SmtUtils]: Spent 51.49s on a formula simplification. DAG size of input: 111 DAG size of output: 102 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 14:56:00,401 WARN L286 SmtUtils]: Spent 52.78s on a formula simplification. DAG size of input: 109 DAG size of output: 93 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 14:56:56,754 WARN L286 SmtUtils]: Spent 56.35s on a formula simplification. DAG size of input: 109 DAG size of output: 93 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 14:57:53,540 WARN L286 SmtUtils]: Spent 56.79s on a formula simplification. DAG size of input: 111 DAG size of output: 102 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 14:58:52,682 WARN L286 SmtUtils]: Spent 59.14s on a formula simplification. DAG size of input: 111 DAG size of output: 102 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 14:59:45,518 WARN L286 SmtUtils]: Spent 52.83s on a formula simplification. DAG size of input: 111 DAG size of output: 102 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 15:00:36,888 WARN L286 SmtUtils]: Spent 51.37s on a formula simplification. DAG size of input: 111 DAG size of output: 102 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 15:01:26,251 WARN L286 SmtUtils]: Spent 49.36s on a formula simplification. DAG size of input: 109 DAG size of output: 93 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-13 15:02:17,630 WARN L286 SmtUtils]: Spent 51.38s on a formula simplification. DAG size of input: 109 DAG size of output: 93 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or)