./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu --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 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:22,269 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:22,398 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 08:01:22,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:22,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:22,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:22,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:22,451 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:22,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:22,457 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:22,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:22,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:22,458 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:22,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:22,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:01:22,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:22,461 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:22,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:01:22,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:22,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:01:22,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:01:22,464 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:22,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:22,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:22,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:22,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:22,467 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:22,468 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:22,468 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:01:22,469 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:01:22,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:01:22,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:22,470 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:01:22,471 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:22,471 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:22,471 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:22,471 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be [2023-11-19 08:01:22,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:22,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:22,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:22,794 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:22,797 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:22,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2023-11-19 08:01:25,909 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:26,515 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:26,516 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2023-11-19 08:01:26,563 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu/data/80796a338/458edf3431af4ed8aee85e9e8aeba787/FLAG77d6d8fb1 [2023-11-19 08:01:26,581 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu/data/80796a338/458edf3431af4ed8aee85e9e8aeba787 [2023-11-19 08:01:26,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:26,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:26,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:26,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:26,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:26,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:26" (1/1) ... [2023-11-19 08:01:26,600 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a2ac04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:26, skipping insertion in model container [2023-11-19 08:01:26,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:26" (1/1) ... [2023-11-19 08:01:26,805 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:27,851 WARN L240 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_d31c5b28-e0dd-4383-83c8-a9c51491c419/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2023-11-19 08:01:28,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:28,469 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:28,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [6121-6122] [2023-11-19 08:01:28,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6137] [2023-11-19 08:01:28,653 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6140] [2023-11-19 08:01:28,653 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6143] [2023-11-19 08:01:28,654 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6146] [2023-11-19 08:01:28,655 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& kernel_stack)); [6163] [2023-11-19 08:01:28,656 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [6166] [2023-11-19 08:01:28,656 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [6169] [2023-11-19 08:01:28,657 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [6172] [2023-11-19 08:01:28,669 WARN L240 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_d31c5b28-e0dd-4383-83c8-a9c51491c419/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2023-11-19 08:01:28,816 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/6390/dscv_tempdir/dscv/ri/144_2a/drivers/net/wireless/libertas/if_usb.o.c.prepared"), "i" (692), "i" (12UL)); [7225-7226] [2023-11-19 08:01:28,817 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/6390/dscv_tempdir/dscv/ri/144_2a/drivers/net/wireless/libertas/if_usb.o.c.prepared"), "i" (697), "i" (12UL)); [7235-7236] [2023-11-19 08:01:28,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:28,996 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:29,004 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:29,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:29 WrapperNode [2023-11-19 08:01:29,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:29,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:29,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:29,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:29,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:29" (1/1) ... [2023-11-19 08:01:29,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:29" (1/1) ... [2023-11-19 08:01:29,217 INFO L138 Inliner]: procedures = 174, calls = 1416, calls flagged for inlining = 82, calls inlined = 66, statements flattened = 3155 [2023-11-19 08:01:29,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:29,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:29,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:29,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:29,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:29" (1/1) ... [2023-11-19 08:01:29,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:29" (1/1) ... [2023-11-19 08:01:29,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:29" (1/1) ... [2023-11-19 08:01:29,245 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:29" (1/1) ... [2023-11-19 08:01:29,329 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:29" (1/1) ... [2023-11-19 08:01:29,347 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:29" (1/1) ... [2023-11-19 08:01:29,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:29" (1/1) ... [2023-11-19 08:01:29,390 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:29" (1/1) ... [2023-11-19 08:01:29,430 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:29,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:29,431 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:29,432 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:29,433 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:29" (1/1) ... [2023-11-19 08:01:29,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:29,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:29,471 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:29,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c5b28-e0dd-4383-83c8-a9c51491c419/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_reset_device [2023-11-19 08:01:29,518 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_reset_device [2023-11-19 08:01:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_resume [2023-11-19 08:01:29,518 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_resume [2023-11-19 08:01:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 08:01:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-19 08:01:29,519 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-19 08:01:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2023-11-19 08:01:29,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2023-11-19 08:01:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 08:01:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 08:01:29,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 08:01:29,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 08:01:29,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:01:29,520 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-19 08:01:29,520 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-19 08:01:29,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-11-19 08:01:29,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-11-19 08:01:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 08:01:29,521 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 08:01:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 08:01:29,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 08:01:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 08:01:29,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 08:01:29,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2023-11-19 08:01:29,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2023-11-19 08:01:29,522 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb_fwload [2023-11-19 08:01:29,522 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb_fwload [2023-11-19 08:01:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 08:01:29,523 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 08:01:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-11-19 08:01:29,523 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-11-19 08:01:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2023-11-19 08:01:29,523 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2023-11-19 08:01:29,524 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive_fwload [2023-11-19 08:01:29,524 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive_fwload [2023-11-19 08:01:29,524 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 08:01:29,524 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 08:01:29,524 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_send_fw_pkt [2023-11-19 08:01:29,524 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_send_fw_pkt [2023-11-19 08:01:29,524 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2023-11-19 08:01:29,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2023-11-19 08:01:29,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:01:29,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 08:01:29,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 08:01:29,525 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_free [2023-11-19 08:01:29,525 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_free [2023-11-19 08:01:29,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 08:01:29,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 08:01:29,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 08:01:29,526 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 08:01:29,526 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:01:29,526 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:01:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:01:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-11-19 08:01:29,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-11-19 08:01:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_disconnect [2023-11-19 08:01:29,527 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_disconnect [2023-11-19 08:01:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2023-11-19 08:01:29,528 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2023-11-19 08:01:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-11-19 08:01:29,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-11-19 08:01:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_9 [2023-11-19 08:01:29,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_9 [2023-11-19 08:01:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 08:01:29,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 08:01:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:01:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:01:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 08:01:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 08:01:29,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 08:01:29,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2023-11-19 08:01:29,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2023-11-19 08:01:29,530 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2023-11-19 08:01:29,530 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2023-11-19 08:01:29,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:01:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2023-11-19 08:01:29,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2023-11-19 08:01:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-19 08:01:29,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-19 08:01:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2023-11-19 08:01:29,531 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2023-11-19 08:01:29,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2023-11-19 08:01:29,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2023-11-19 08:01:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:01:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 08:01:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 08:01:29,532 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 08:01:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-19 08:01:29,533 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-19 08:01:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_card [2023-11-19 08:01:29,533 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_remove_card [2023-11-19 08:01:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 08:01:29,533 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 08:01:29,533 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-11-19 08:01:29,534 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-11-19 08:01:29,534 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive [2023-11-19 08:01:29,534 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive [2023-11-19 08:01:29,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-11-19 08:01:29,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-11-19 08:01:29,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:01:29,534 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-19 08:01:29,535 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-19 08:01:29,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 08:01:29,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 08:01:29,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 08:01:29,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:29,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:30,196 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:30,200 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:01:30,606 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 08:01:31,640 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-11-19 08:01:33,017 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:01:33,044 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:01:33,045 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:01:33,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:33 BoogieIcfgContainer [2023-11-19 08:01:33,061 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:01:33,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:01:33,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:01:33,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:01:33,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:26" (1/3) ... [2023-11-19 08:01:33,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55aaaf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:33, skipping insertion in model container [2023-11-19 08:01:33,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:29" (2/3) ... [2023-11-19 08:01:33,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55aaaf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:33, skipping insertion in model container [2023-11-19 08:01:33,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:33" (3/3) ... [2023-11-19 08:01:33,073 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2023-11-19 08:01:33,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:01:33,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:01:33,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:01:33,204 INFO L357 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, mHoare=true, 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;@60aec725, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:01:33,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:01:33,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 1020 states, 750 states have (on average 1.4693333333333334) internal successors, (1102), 780 states have internal predecessors, (1102), 224 states have call successors, (224), 46 states have call predecessors, (224), 44 states have return successors, (218), 212 states have call predecessors, (218), 218 states have call successors, (218) [2023-11-19 08:01:33,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 08:01:33,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:33,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:33,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:33,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash -940172488, now seen corresponding path program 1 times [2023-11-19 08:01:33,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:33,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895667216] [2023-11-19 08:01:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:33,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:01:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:01:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:34,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:34,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895667216] [2023-11-19 08:01:34,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895667216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:34,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:34,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:01:34,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809747863] [2023-11-19 08:01:34,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:34,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:34,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:34,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:34,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:34,225 INFO L87 Difference]: Start difference. First operand has 1020 states, 750 states have (on average 1.4693333333333334) internal successors, (1102), 780 states have internal predecessors, (1102), 224 states have call successors, (224), 46 states have call predecessors, (224), 44 states have return successors, (218), 212 states have call predecessors, (218), 218 states have call successors, (218) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:01:39,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:39,445 INFO L93 Difference]: Finished difference Result 3411 states and 5296 transitions. [2023-11-19 08:01:39,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:39,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2023-11-19 08:01:39,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:39,493 INFO L225 Difference]: With dead ends: 3411 [2023-11-19 08:01:39,493 INFO L226 Difference]: Without dead ends: 2368 [2023-11-19 08:01:39,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:01:39,518 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 3340 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 1500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3495 SdHoareTripleChecker+Valid, 3583 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1500 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:39,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3495 Valid, 3583 Invalid, 3003 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1500 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-19 08:01:39,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2023-11-19 08:01:39,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 1973. [2023-11-19 08:01:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1459 states have (on average 1.4557916381082934) internal successors, (2124), 1499 states have internal predecessors, (2124), 428 states have call successors, (428), 86 states have call predecessors, (428), 85 states have return successors, (423), 411 states have call predecessors, (423), 423 states have call successors, (423) [2023-11-19 08:01:39,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 2975 transitions. [2023-11-19 08:01:39,907 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 2975 transitions. Word has length 29 [2023-11-19 08:01:39,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:39,908 INFO L495 AbstractCegarLoop]: Abstraction has 1973 states and 2975 transitions. [2023-11-19 08:01:39,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:01:39,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 2975 transitions. [2023-11-19 08:01:39,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 08:01:39,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:39,920 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:01:39,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:01:39,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:39,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:39,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2032318837, now seen corresponding path program 1 times [2023-11-19 08:01:39,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:39,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687619211] [2023-11-19 08:01:39,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:39,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:40,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:01:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:40,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:01:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:40,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 08:01:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:01:40,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:40,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687619211] [2023-11-19 08:01:40,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687619211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:40,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:40,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:01:40,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677696290] [2023-11-19 08:01:40,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:40,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:40,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:40,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:40,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:40,312 INFO L87 Difference]: Start difference. First operand 1973 states and 2975 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:01:43,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:43,241 INFO L93 Difference]: Finished difference Result 2394 states and 3631 transitions. [2023-11-19 08:01:43,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:43,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2023-11-19 08:01:43,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:43,260 INFO L225 Difference]: With dead ends: 2394 [2023-11-19 08:01:43,260 INFO L226 Difference]: Without dead ends: 2381 [2023-11-19 08:01:43,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:01:43,264 INFO L413 NwaCegarLoop]: 1220 mSDtfsCounter, 2407 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2537 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:43,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2537 Valid, 2412 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 08:01:43,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2023-11-19 08:01:43,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1973. [2023-11-19 08:01:43,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1459 states have (on average 1.455106237148732) internal successors, (2123), 1499 states have internal predecessors, (2123), 428 states have call successors, (428), 86 states have call predecessors, (428), 85 states have return successors, (423), 411 states have call predecessors, (423), 423 states have call successors, (423) [2023-11-19 08:01:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 2974 transitions. [2023-11-19 08:01:43,431 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 2974 transitions. Word has length 39 [2023-11-19 08:01:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:43,431 INFO L495 AbstractCegarLoop]: Abstraction has 1973 states and 2974 transitions. [2023-11-19 08:01:43,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:01:43,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 2974 transitions. [2023-11-19 08:01:43,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 08:01:43,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:43,434 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:01:43,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:01:43,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:43,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:43,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2089577139, now seen corresponding path program 1 times [2023-11-19 08:01:43,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:43,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813208071] [2023-11-19 08:01:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:43,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:44,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:01:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:44,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:01:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:44,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 08:01:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:01:44,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:44,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813208071] [2023-11-19 08:01:44,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813208071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:44,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:44,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:01:44,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106681337] [2023-11-19 08:01:44,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:44,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:44,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:44,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:44,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:44,208 INFO L87 Difference]: Start difference. First operand 1973 states and 2974 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:01:49,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:49,009 INFO L93 Difference]: Finished difference Result 6665 states and 10327 transitions. [2023-11-19 08:01:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:49,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2023-11-19 08:01:49,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:49,055 INFO L225 Difference]: With dead ends: 6665 [2023-11-19 08:01:49,055 INFO L226 Difference]: Without dead ends: 4711 [2023-11-19 08:01:49,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:01:49,072 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 3379 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 1481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3518 SdHoareTripleChecker+Valid, 3736 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1481 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:49,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3518 Valid, 3736 Invalid, 2981 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1481 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-19 08:01:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2023-11-19 08:01:49,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4106. [2023-11-19 08:01:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4106 states, 3039 states have (on average 1.449489963803883) internal successors, (4405), 3115 states have internal predecessors, (4405), 874 states have call successors, (874), 169 states have call predecessors, (874), 192 states have return successors, (989), 865 states have call predecessors, (989), 869 states have call successors, (989) [2023-11-19 08:01:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4106 states to 4106 states and 6268 transitions. [2023-11-19 08:01:49,485 INFO L78 Accepts]: Start accepts. Automaton has 4106 states and 6268 transitions. Word has length 39 [2023-11-19 08:01:49,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:49,486 INFO L495 AbstractCegarLoop]: Abstraction has 4106 states and 6268 transitions. [2023-11-19 08:01:49,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:01:49,486 INFO L276 IsEmpty]: Start isEmpty. Operand 4106 states and 6268 transitions. [2023-11-19 08:01:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 08:01:49,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:49,492 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:01:49,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:01:49,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:49,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash 351859908, now seen corresponding path program 1 times [2023-11-19 08:01:49,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:49,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215289319] [2023-11-19 08:01:49,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:49,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:50,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:01:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:50,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:01:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:50,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 08:01:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:01:50,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:50,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215289319] [2023-11-19 08:01:50,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215289319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:50,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:50,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:01:50,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669366268] [2023-11-19 08:01:50,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:50,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:50,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:50,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:50,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:50,181 INFO L87 Difference]: Start difference. First operand 4106 states and 6268 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:01:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:55,271 INFO L93 Difference]: Finished difference Result 13456 states and 21179 transitions. [2023-11-19 08:01:55,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:55,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2023-11-19 08:01:55,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:55,352 INFO L225 Difference]: With dead ends: 13456 [2023-11-19 08:01:55,352 INFO L226 Difference]: Without dead ends: 9369 [2023-11-19 08:01:55,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:01:55,382 INFO L413 NwaCegarLoop]: 1260 mSDtfsCounter, 3389 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 1497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 3522 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1497 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:55,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 3522 Invalid, 2967 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1497 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-19 08:01:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9369 states. [2023-11-19 08:01:56,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9369 to 8365. [2023-11-19 08:01:56,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8365 states, 6192 states have (on average 1.4452519379844961) internal successors, (8949), 6340 states have internal predecessors, (8949), 1766 states have call successors, (1766), 335 states have call predecessors, (1766), 406 states have return successors, (2221), 1773 states have call predecessors, (2221), 1761 states have call successors, (2221) [2023-11-19 08:01:56,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8365 states to 8365 states and 12936 transitions. [2023-11-19 08:01:56,164 INFO L78 Accepts]: Start accepts. Automaton has 8365 states and 12936 transitions. Word has length 40 [2023-11-19 08:01:56,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:56,167 INFO L495 AbstractCegarLoop]: Abstraction has 8365 states and 12936 transitions. [2023-11-19 08:01:56,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:01:56,168 INFO L276 IsEmpty]: Start isEmpty. Operand 8365 states and 12936 transitions. [2023-11-19 08:01:56,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 08:01:56,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:56,170 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:01:56,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:01:56,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:56,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:56,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1977761834, now seen corresponding path program 1 times [2023-11-19 08:01:56,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:56,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962391500] [2023-11-19 08:01:56,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:56,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:01:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:56,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:01:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:56,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 08:01:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:01:56,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:56,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962391500] [2023-11-19 08:01:56,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962391500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:56,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:56,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:01:56,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602468431] [2023-11-19 08:01:56,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:56,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:56,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:56,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:56,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:56,424 INFO L87 Difference]: Start difference. First operand 8365 states and 12936 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:02:01,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:01,210 INFO L93 Difference]: Finished difference Result 9367 states and 14578 transitions. [2023-11-19 08:02:01,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:02:01,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2023-11-19 08:02:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:01,383 INFO L225 Difference]: With dead ends: 9367 [2023-11-19 08:02:01,383 INFO L226 Difference]: Without dead ends: 9364 [2023-11-19 08:02:01,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:02:01,389 INFO L413 NwaCegarLoop]: 1262 mSDtfsCounter, 3384 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 1499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3528 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 2957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1499 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:01,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3528 Valid, 3524 Invalid, 2957 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1499 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-19 08:02:01,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9364 states. [2023-11-19 08:02:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9364 to 8366. [2023-11-19 08:02:02,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8366 states, 6193 states have (on average 1.445180041982884) internal successors, (8950), 6341 states have internal predecessors, (8950), 1766 states have call successors, (1766), 335 states have call predecessors, (1766), 406 states have return successors, (2221), 1773 states have call predecessors, (2221), 1761 states have call successors, (2221) [2023-11-19 08:02:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8366 states to 8366 states and 12937 transitions. [2023-11-19 08:02:02,064 INFO L78 Accepts]: Start accepts. Automaton has 8366 states and 12937 transitions. Word has length 41 [2023-11-19 08:02:02,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:02,065 INFO L495 AbstractCegarLoop]: Abstraction has 8366 states and 12937 transitions. [2023-11-19 08:02:02,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:02:02,066 INFO L276 IsEmpty]: Start isEmpty. Operand 8366 states and 12937 transitions. [2023-11-19 08:02:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 08:02:02,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:02,069 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:02:02,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:02:02,069 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:02,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1181586937, now seen corresponding path program 1 times [2023-11-19 08:02:02,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:02,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189875698] [2023-11-19 08:02:02,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:02,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:02,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:02:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:02,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:02:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:02,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 08:02:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:02:02,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:02,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189875698] [2023-11-19 08:02:02,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189875698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:02,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:02,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:02:02,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672819194] [2023-11-19 08:02:02,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:02,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:02,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:02,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:02,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:02,428 INFO L87 Difference]: Start difference. First operand 8366 states and 12937 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:02:05,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:05,614 INFO L93 Difference]: Finished difference Result 9363 states and 14574 transitions. [2023-11-19 08:02:05,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:05,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2023-11-19 08:02:05,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:05,673 INFO L225 Difference]: With dead ends: 9363 [2023-11-19 08:02:05,673 INFO L226 Difference]: Without dead ends: 9360 [2023-11-19 08:02:05,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:02:05,679 INFO L413 NwaCegarLoop]: 1207 mSDtfsCounter, 2381 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 874 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2506 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:05,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2506 Valid, 2363 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [874 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 08:02:05,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9360 states. [2023-11-19 08:02:06,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9360 to 8365. [2023-11-19 08:02:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8365 states, 6193 states have (on average 1.4450185693524948) internal successors, (8949), 6340 states have internal predecessors, (8949), 1765 states have call successors, (1765), 335 states have call predecessors, (1765), 406 states have return successors, (2221), 1773 states have call predecessors, (2221), 1761 states have call successors, (2221) [2023-11-19 08:02:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8365 states to 8365 states and 12935 transitions. [2023-11-19 08:02:06,435 INFO L78 Accepts]: Start accepts. Automaton has 8365 states and 12935 transitions. Word has length 42 [2023-11-19 08:02:06,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:06,438 INFO L495 AbstractCegarLoop]: Abstraction has 8365 states and 12935 transitions. [2023-11-19 08:02:06,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:02:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 8365 states and 12935 transitions. [2023-11-19 08:02:06,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 08:02:06,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:06,442 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:02:06,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:02:06,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:06,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:06,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2025003257, now seen corresponding path program 1 times [2023-11-19 08:02:06,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:06,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658279654] [2023-11-19 08:02:06,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:06,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:06,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:02:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:06,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:02:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 08:02:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:02:06,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:06,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658279654] [2023-11-19 08:02:06,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658279654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:06,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:06,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:02:06,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127238220] [2023-11-19 08:02:06,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:06,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:06,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:06,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:06,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:06,745 INFO L87 Difference]: Start difference. First operand 8365 states and 12935 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)