./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--can--usb--esd_usb2.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX --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 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:58:01,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:58:01,748 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-08 16:58:01,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:58:01,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:58:01,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:58:01,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:58:01,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:58:01,786 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:58:01,787 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:58:01,788 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:58:01,788 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:58:01,789 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:58:01,790 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:58:01,790 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:58:01,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:58:01,792 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:58:01,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:58:01,793 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:58:01,793 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:58:01,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:58:01,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:58:01,799 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:58:01,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:58:01,800 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:58:01,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:58:01,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:58:01,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:58:01,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:58:01,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:58:01,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:58:01,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:58:01,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:58:01,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:58:01,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:58:01,808 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:58:01,808 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:58:01,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:58:01,809 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:58:01,810 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_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 [2024-11-08 16:58:02,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:58:02,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:58:02,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:58:02,256 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:58:02,257 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:58:02,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-08 16:58:04,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:58:05,490 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:58:05,492 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2024-11-08 16:58:05,553 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/data/830be18f3/83cec068687e46d7b1f393a79c79a4a3/FLAG3dfd72b56 [2024-11-08 16:58:05,579 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/data/830be18f3/83cec068687e46d7b1f393a79c79a4a3 [2024-11-08 16:58:05,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:58:05,586 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:58:05,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:58:05,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:58:05,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:58:05,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:58:05" (1/1) ... [2024-11-08 16:58:05,600 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ff576e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:05, skipping insertion in model container [2024-11-08 16:58:05,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:58:05" (1/1) ... [2024-11-08 16:58:05,761 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:58:07,004 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_2df934b3-8f64-4839-abb2-78eb9d77dc45/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2024-11-08 16:58:07,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:58:07,816 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:58:08,033 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; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5448] [2024-11-08 16:58:08,036 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; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5455] [2024-11-08 16:58:08,037 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; btr %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5463-5464] [2024-11-08 16:58:08,041 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)); [5493] [2024-11-08 16:58:08,042 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; decl %0": "+m" (v->counter)); [5500] [2024-11-08 16:58:08,057 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_2df934b3-8f64-4839-abb2-78eb9d77dc45/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2024-11-08 16:58:08,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:58:08,471 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:58:08,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08 WrapperNode [2024-11-08 16:58:08,473 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:58:08,474 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:58:08,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:58:08,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:58:08,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08" (1/1) ... [2024-11-08 16:58:08,570 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08" (1/1) ... [2024-11-08 16:58:08,732 INFO L138 Inliner]: procedures = 161, calls = 852, calls flagged for inlining = 73, calls inlined = 73, statements flattened = 2743 [2024-11-08 16:58:08,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:58:08,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:58:08,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:58:08,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:58:08,750 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08" (1/1) ... [2024-11-08 16:58:08,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08" (1/1) ... [2024-11-08 16:58:08,771 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08" (1/1) ... [2024-11-08 16:58:09,249 INFO L175 MemorySlicer]: Split 518 memory accesses to 8 slices as follows [368, 2, 19, 19, 48, 9, 44, 9]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [5, 2, 0, 0, 0, 0, 0, 0]. The 304 writes are split as follows [196, 0, 11, 0, 48, 5, 44, 0]. [2024-11-08 16:58:09,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08" (1/1) ... [2024-11-08 16:58:09,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08" (1/1) ... [2024-11-08 16:58:09,358 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08" (1/1) ... [2024-11-08 16:58:09,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08" (1/1) ... [2024-11-08 16:58:09,462 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08" (1/1) ... [2024-11-08 16:58:09,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08" (1/1) ... [2024-11-08 16:58:09,511 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:58:09,512 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:58:09,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:58:09,513 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:58:09,514 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08" (1/1) ... [2024-11-08 16:58:09,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:58:09,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:58:09,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:58:09,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:58:09,612 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2024-11-08 16:58:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2024-11-08 16:58:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2024-11-08 16:58:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2024-11-08 16:58:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_17 [2024-11-08 16:58:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_17 [2024-11-08 16:58:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-08 16:58:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-08 16:58:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-08 16:58:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-08 16:58:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-08 16:58:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-08 16:58:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-08 16:58:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-08 16:58:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2024-11-08 16:58:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2024-11-08 16:58:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2024-11-08 16:58:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2024-11-08 16:58:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-08 16:58:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-08 16:58:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-08 16:58:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-08 16:58:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-08 16:58:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-08 16:58:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-08 16:58:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-08 16:58:09,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-08 16:58:09,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-08 16:58:09,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:58:09,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:58:09,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 16:58:09,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 16:58:09,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-08 16:58:09,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-08 16:58:09,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-08 16:58:09,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-08 16:58:09,620 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2024-11-08 16:58:09,620 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2024-11-08 16:58:09,620 INFO L130 BoogieDeclarations]: Found specification of procedure can_free_echo_skb [2024-11-08 16:58:09,620 INFO L138 BoogieDeclarations]: Found implementation of procedure can_free_echo_skb [2024-11-08 16:58:09,620 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2024-11-08 16:58:09,620 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2024-11-08 16:58:09,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2024-11-08 16:58:09,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2024-11-08 16:58:09,621 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2024-11-08 16:58:09,621 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2024-11-08 16:58:09,621 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2024-11-08 16:58:09,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2024-11-08 16:58:09,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-08 16:58:09,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-08 16:58:09,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2024-11-08 16:58:09,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2024-11-08 16:58:09,622 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2024-11-08 16:58:09,622 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2024-11-08 16:58:09,623 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-08 16:58:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-08 16:58:09,623 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2024-11-08 16:58:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2024-11-08 16:58:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:58:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:58:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 16:58:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 16:58:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-08 16:58:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-08 16:58:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-08 16:58:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-08 16:58:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-08 16:58:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-08 16:58:09,626 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2024-11-08 16:58:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2024-11-08 16:58:09,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-08 16:58:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-08 16:58:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 16:58:09,627 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 16:58:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2024-11-08 16:58:09,627 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2024-11-08 16:58:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 16:58:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2024-11-08 16:58:09,628 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2024-11-08 16:58:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2024-11-08 16:58:09,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2024-11-08 16:58:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_4 [2024-11-08 16:58:09,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_4 [2024-11-08 16:58:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:58:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2024-11-08 16:58:09,630 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2024-11-08 16:58:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-11-08 16:58:09,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-11-08 16:58:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:58:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 16:58:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 16:58:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 16:58:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-08 16:58:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-08 16:58:09,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-08 16:58:09,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-08 16:58:09,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-08 16:58:09,632 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-08 16:58:09,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-08 16:58:09,633 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2024-11-08 16:58:09,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2024-11-08 16:58:09,633 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2024-11-08 16:58:09,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2024-11-08 16:58:09,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 16:58:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 16:58:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 16:58:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-08 16:58:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-08 16:58:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-08 16:58:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-08 16:58:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-08 16:58:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2024-11-08 16:58:09,635 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2024-11-08 16:58:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2024-11-08 16:58:09,636 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2024-11-08 16:58:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2024-11-08 16:58:09,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2024-11-08 16:58:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:58:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2024-11-08 16:58:09,637 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2024-11-08 16:58:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_read_bulk_callback [2024-11-08 16:58:09,637 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_read_bulk_callback [2024-11-08 16:58:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-11-08 16:58:09,637 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-11-08 16:58:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2024-11-08 16:58:09,638 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2024-11-08 16:58:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_send_msg [2024-11-08 16:58:09,638 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_send_msg [2024-11-08 16:58:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2024-11-08 16:58:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2024-11-08 16:58:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-11-08 16:58:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-11-08 16:58:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2024-11-08 16:58:09,640 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2024-11-08 16:58:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2024-11-08 16:58:09,640 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2024-11-08 16:58:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-11-08 16:58:09,641 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-11-08 16:58:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2024-11-08 16:58:09,641 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2024-11-08 16:58:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2024-11-08 16:58:09,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2024-11-08 16:58:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2024-11-08 16:58:09,642 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2024-11-08 16:58:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2024-11-08 16:58:09,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2024-11-08 16:58:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:58:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:58:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 16:58:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 16:58:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-08 16:58:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-08 16:58:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-08 16:58:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-08 16:58:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2024-11-08 16:58:09,644 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2024-11-08 16:58:09,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-08 16:58:09,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-08 16:58:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2024-11-08 16:58:09,645 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2024-11-08 16:58:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_disconnect [2024-11-08 16:58:09,645 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_disconnect [2024-11-08 16:58:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:58:09,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:58:10,324 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:58:10,328 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:58:10,496 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-08 16:58:10,944 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2024-11-08 16:58:19,610 INFO L? ?]: Removed 1051 outVars from TransFormulas that were not future-live. [2024-11-08 16:58:19,610 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:58:19,660 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:58:19,661 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 16:58:19,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:58:19 BoogieIcfgContainer [2024-11-08 16:58:19,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:58:19,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:58:19,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:58:19,669 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:58:19,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:58:05" (1/3) ... [2024-11-08 16:58:19,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4746f400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:58:19, skipping insertion in model container [2024-11-08 16:58:19,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:08" (2/3) ... [2024-11-08 16:58:19,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4746f400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:58:19, skipping insertion in model container [2024-11-08 16:58:19,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:58:19" (3/3) ... [2024-11-08 16:58:19,674 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2024-11-08 16:58:19,699 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:58:19,700 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:58:19,833 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:58:19,842 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;@41458591, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:58:19,843 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 16:58:19,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 847 states, 629 states have (on average 1.356120826709062) internal successors, (853), 655 states have internal predecessors, (853), 167 states have call successors, (167), 51 states have call predecessors, (167), 49 states have return successors, (158), 156 states have call predecessors, (158), 158 states have call successors, (158) [2024-11-08 16:58:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-08 16:58:19,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:19,879 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:58:19,880 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:19,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:19,886 INFO L85 PathProgramCache]: Analyzing trace with hash 569038334, now seen corresponding path program 1 times [2024-11-08 16:58:19,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:19,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959056900] [2024-11-08 16:58:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:19,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:26,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 16:58:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:26,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 16:58:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:26,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:58:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:26,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 16:58:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:26,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 16:58:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:26,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 16:58:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:26,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 16:58:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:26,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 16:58:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:26,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 16:58:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:26,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 16:58:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:26,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 16:58:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-08 16:58:26,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:26,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959056900] [2024-11-08 16:58:26,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959056900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:26,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:26,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:58:26,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054229276] [2024-11-08 16:58:26,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:26,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:58:26,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:27,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:58:27,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:58:27,051 INFO L87 Difference]: Start difference. First operand has 847 states, 629 states have (on average 1.356120826709062) internal successors, (853), 655 states have internal predecessors, (853), 167 states have call successors, (167), 51 states have call predecessors, (167), 49 states have return successors, (158), 156 states have call predecessors, (158), 158 states have call successors, (158) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-08 16:58:31,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 16:58:35,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 16:58:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:46,323 INFO L93 Difference]: Finished difference Result 2655 states and 3802 transitions. [2024-11-08 16:58:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:58:46,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 83 [2024-11-08 16:58:46,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:46,361 INFO L225 Difference]: With dead ends: 2655 [2024-11-08 16:58:46,361 INFO L226 Difference]: Without dead ends: 1785 [2024-11-08 16:58:46,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:58:46,374 INFO L432 NwaCegarLoop]: 1055 mSDtfsCounter, 1518 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 422 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:58:46,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1646 Valid, 2499 Invalid, 1310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [422 Valid, 886 Invalid, 2 Unknown, 0 Unchecked, 18.8s Time] [2024-11-08 16:58:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2024-11-08 16:58:46,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1609. [2024-11-08 16:58:46,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1214 states have (on average 1.316309719934102) internal successors, (1598), 1240 states have internal predecessors, (1598), 298 states have call successors, (298), 97 states have call predecessors, (298), 96 states have return successors, (293), 289 states have call predecessors, (293), 293 states have call successors, (293) [2024-11-08 16:58:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2189 transitions. [2024-11-08 16:58:46,613 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2189 transitions. Word has length 83 [2024-11-08 16:58:46,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:46,614 INFO L471 AbstractCegarLoop]: Abstraction has 1609 states and 2189 transitions. [2024-11-08 16:58:46,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-08 16:58:46,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2189 transitions. [2024-11-08 16:58:46,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 16:58:46,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:46,621 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:58:46,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:58:46,622 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:46,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:46,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1592493928, now seen corresponding path program 1 times [2024-11-08 16:58:46,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:46,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556034127] [2024-11-08 16:58:46,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:46,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 16:58:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 16:58:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:58:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 16:58:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 16:58:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 16:58:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 16:58:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 16:58:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 16:58:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 16:58:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 16:58:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 16:58:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-08 16:58:52,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556034127] [2024-11-08 16:58:52,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556034127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:52,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:52,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:58:52,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042953083] [2024-11-08 16:58:52,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:52,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:58:52,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:52,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:58:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:58:52,757 INFO L87 Difference]: Start difference. First operand 1609 states and 2189 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 16:58:56,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 16:59:10,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:59:10,436 INFO L93 Difference]: Finished difference Result 5128 states and 7073 transitions. [2024-11-08 16:59:10,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:59:10,440 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), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 93 [2024-11-08 16:59:10,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:59:10,523 INFO L225 Difference]: With dead ends: 5128 [2024-11-08 16:59:10,524 INFO L226 Difference]: Without dead ends: 3544 [2024-11-08 16:59:10,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:59:10,531 INFO L432 NwaCegarLoop]: 1293 mSDtfsCounter, 1358 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 345 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:59:10,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 2794 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 16.8s Time] [2024-11-08 16:59:10,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2024-11-08 16:59:10,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3182. [2024-11-08 16:59:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3182 states, 2409 states have (on average 1.3163138231631382) internal successors, (3171), 2457 states have internal predecessors, (3171), 580 states have call successors, (580), 193 states have call predecessors, (580), 192 states have return successors, (585), 567 states have call predecessors, (585), 575 states have call successors, (585) [2024-11-08 16:59:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 4336 transitions. [2024-11-08 16:59:10,779 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 4336 transitions. Word has length 93 [2024-11-08 16:59:10,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:59:10,782 INFO L471 AbstractCegarLoop]: Abstraction has 3182 states and 4336 transitions. [2024-11-08 16:59:10,782 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), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 16:59:10,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 4336 transitions. [2024-11-08 16:59:10,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 16:59:10,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:59:10,792 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:59:10,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:59:10,792 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:59:10,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:59:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2123005374, now seen corresponding path program 1 times [2024-11-08 16:59:10,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:59:10,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095054521] [2024-11-08 16:59:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:10,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:59:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:16,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 16:59:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:16,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 16:59:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:16,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:59:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:16,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 16:59:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:16,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 16:59:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:16,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 16:59:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:16,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 16:59:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:16,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 16:59:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:16,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 16:59:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:16,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 16:59:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:16,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 16:59:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:16,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 16:59:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-08 16:59:16,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:59:16,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095054521] [2024-11-08 16:59:16,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095054521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:59:16,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:59:16,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:59:16,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663352095] [2024-11-08 16:59:16,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:59:16,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:59:16,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:59:16,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:59:16,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:59:16,492 INFO L87 Difference]: Start difference. First operand 3182 states and 4336 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 16:59:20,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 16:59:27,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:59:27,905 INFO L93 Difference]: Finished difference Result 3536 states and 4900 transitions. [2024-11-08 16:59:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:59:27,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 94 [2024-11-08 16:59:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:59:27,934 INFO L225 Difference]: With dead ends: 3536 [2024-11-08 16:59:27,934 INFO L226 Difference]: Without dead ends: 3533 [2024-11-08 16:59:27,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:59:27,939 INFO L432 NwaCegarLoop]: 925 mSDtfsCounter, 1271 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 266 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:59:27,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 1448 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 495 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2024-11-08 16:59:27,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3533 states. [2024-11-08 16:59:28,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3533 to 3181. [2024-11-08 16:59:28,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3181 states, 2409 states have (on average 1.3158987131589872) internal successors, (3170), 2456 states have internal predecessors, (3170), 579 states have call successors, (579), 193 states have call predecessors, (579), 192 states have return successors, (585), 567 states have call predecessors, (585), 575 states have call successors, (585) [2024-11-08 16:59:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 4334 transitions. [2024-11-08 16:59:28,179 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 4334 transitions. Word has length 94 [2024-11-08 16:59:28,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:59:28,180 INFO L471 AbstractCegarLoop]: Abstraction has 3181 states and 4334 transitions. [2024-11-08 16:59:28,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 16:59:28,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 4334 transitions. [2024-11-08 16:59:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-08 16:59:28,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:59:28,184 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:59:28,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:59:28,184 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:59:28,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:59:28,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1388986149, now seen corresponding path program 1 times [2024-11-08 16:59:28,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:59:28,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273301063] [2024-11-08 16:59:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:28,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:59:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:31,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 16:59:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:32,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 16:59:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:32,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:59:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:32,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 16:59:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:32,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 16:59:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:32,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 16:59:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:32,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 16:59:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:32,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 16:59:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:32,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 16:59:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:32,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 16:59:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:32,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 16:59:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:32,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 16:59:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-08 16:59:32,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:59:32,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273301063] [2024-11-08 16:59:32,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273301063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:59:32,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:59:32,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:59:32,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973268407] [2024-11-08 16:59:32,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:59:32,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:59:32,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:59:32,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:59:32,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:59:32,126 INFO L87 Difference]: Start difference. First operand 3181 states and 4334 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 16:59:36,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 16:59:43,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:59:43,021 INFO L93 Difference]: Finished difference Result 3535 states and 4898 transitions. [2024-11-08 16:59:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:59:43,022 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 95 [2024-11-08 16:59:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:59:43,050 INFO L225 Difference]: With dead ends: 3535 [2024-11-08 16:59:43,050 INFO L226 Difference]: Without dead ends: 3532 [2024-11-08 16:59:43,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:59:43,057 INFO L432 NwaCegarLoop]: 918 mSDtfsCounter, 1270 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 267 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:59:43,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 1439 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 495 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2024-11-08 16:59:43,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2024-11-08 16:59:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 3180. [2024-11-08 16:59:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3180 states, 2409 states have (on average 1.315483603154836) internal successors, (3169), 2455 states have internal predecessors, (3169), 578 states have call successors, (578), 193 states have call predecessors, (578), 192 states have return successors, (585), 567 states have call predecessors, (585), 575 states have call successors, (585) [2024-11-08 16:59:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 4332 transitions. [2024-11-08 16:59:43,324 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 4332 transitions. Word has length 95 [2024-11-08 16:59:43,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:59:43,326 INFO L471 AbstractCegarLoop]: Abstraction has 3180 states and 4332 transitions. [2024-11-08 16:59:43,327 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 16:59:43,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 4332 transitions. [2024-11-08 16:59:43,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-08 16:59:43,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:59:43,331 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:59:43,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:59:43,332 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:59:43,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:59:43,333 INFO L85 PathProgramCache]: Analyzing trace with hash -109221787, now seen corresponding path program 1 times [2024-11-08 16:59:43,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:59:43,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728644795] [2024-11-08 16:59:43,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:43,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:59:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:47,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 16:59:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:47,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 16:59:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:47,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:59:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:47,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 16:59:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:47,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 16:59:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:47,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 16:59:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:47,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 16:59:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:47,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 16:59:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:47,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 16:59:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:47,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 16:59:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:47,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 16:59:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:47,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 16:59:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-08 16:59:47,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:59:47,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728644795] [2024-11-08 16:59:47,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728644795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:59:47,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:59:47,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:59:47,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184739618] [2024-11-08 16:59:47,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:59:47,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:59:47,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:59:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:59:47,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:59:47,707 INFO L87 Difference]: Start difference. First operand 3180 states and 4332 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 16:59:51,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 16:59:58,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:59:58,751 INFO L93 Difference]: Finished difference Result 3534 states and 4896 transitions. [2024-11-08 16:59:58,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:59:58,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 96 [2024-11-08 16:59:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:59:58,780 INFO L225 Difference]: With dead ends: 3534 [2024-11-08 16:59:58,781 INFO L226 Difference]: Without dead ends: 3531 [2024-11-08 16:59:58,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:59:58,785 INFO L432 NwaCegarLoop]: 909 mSDtfsCounter, 1272 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 268 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:59:58,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 1428 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 495 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2024-11-08 16:59:58,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2024-11-08 16:59:59,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 3179. [2024-11-08 16:59:59,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 2409 states have (on average 1.3150684931506849) internal successors, (3168), 2454 states have internal predecessors, (3168), 577 states have call successors, (577), 193 states have call predecessors, (577), 192 states have return successors, (585), 567 states have call predecessors, (585), 575 states have call successors, (585) [2024-11-08 16:59:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4330 transitions. [2024-11-08 16:59:59,053 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4330 transitions. Word has length 96 [2024-11-08 16:59:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:59:59,054 INFO L471 AbstractCegarLoop]: Abstraction has 3179 states and 4330 transitions. [2024-11-08 16:59:59,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 16:59:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4330 transitions. [2024-11-08 16:59:59,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 16:59:59,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:59:59,057 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:59:59,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:59:59,057 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:59:59,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:59:59,058 INFO L85 PathProgramCache]: Analyzing trace with hash 908772638, now seen corresponding path program 1 times [2024-11-08 16:59:59,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:59:59,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703359486] [2024-11-08 16:59:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:59,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:00:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:03,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:00:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:03,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:00:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:03,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:00:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:03,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:00:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:03,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:00:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:03,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:00:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:03,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:00:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:03,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:00:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:03,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:00:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:03,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:00:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:03,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:00:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:03,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:00:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-08 17:00:03,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:00:03,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703359486] [2024-11-08 17:00:03,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703359486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:00:03,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:00:03,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:00:03,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437650032] [2024-11-08 17:00:03,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:00:03,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:00:03,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:00:03,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:00:03,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:00:03,681 INFO L87 Difference]: Start difference. First operand 3179 states and 4330 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 17:00:07,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:00:14,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:00:14,683 INFO L93 Difference]: Finished difference Result 3533 states and 4894 transitions. [2024-11-08 17:00:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:00:14,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 97 [2024-11-08 17:00:14,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:00:14,710 INFO L225 Difference]: With dead ends: 3533 [2024-11-08 17:00:14,710 INFO L226 Difference]: Without dead ends: 3521 [2024-11-08 17:00:14,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:00:14,714 INFO L432 NwaCegarLoop]: 896 mSDtfsCounter, 1281 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 269 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:00:14,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 1415 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 493 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2024-11-08 17:00:14,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2024-11-08 17:00:14,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 3169. [2024-11-08 17:00:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 2400 states have (on average 1.3145833333333334) internal successors, (3155), 2444 states have internal predecessors, (3155), 576 states have call successors, (576), 193 states have call predecessors, (576), 192 states have return successors, (585), 567 states have call predecessors, (585), 575 states have call successors, (585) [2024-11-08 17:00:14,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 4316 transitions. [2024-11-08 17:00:15,000 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 4316 transitions. Word has length 97 [2024-11-08 17:00:15,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:00:15,001 INFO L471 AbstractCegarLoop]: Abstraction has 3169 states and 4316 transitions. [2024-11-08 17:00:15,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 17:00:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 4316 transitions. [2024-11-08 17:00:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-08 17:00:15,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:00:15,008 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2024-11-08 17:00:15,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:00:15,008 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:00:15,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:00:15,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1366918827, now seen corresponding path program 1 times [2024-11-08 17:00:15,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:00:15,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918297011] [2024-11-08 17:00:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:00:15,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:00:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:19,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:00:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:19,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:00:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:19,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:00:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:19,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:00:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:19,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:00:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:19,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:00:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:19,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:00:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:19,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:00:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:19,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:00:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:19,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:00:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:19,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:00:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:19,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-08 17:00:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:20,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-08 17:00:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:20,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:00:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:20,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:00:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:20,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-11-08 17:00:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:20,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-11-08 17:00:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:20,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-11-08 17:00:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-08 17:00:20,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:00:20,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918297011] [2024-11-08 17:00:20,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918297011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:00:20,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:00:20,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:00:20,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667640743] [2024-11-08 17:00:20,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:00:20,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:00:20,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:00:20,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:00:20,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:00:20,201 INFO L87 Difference]: Start difference. First operand 3169 states and 4316 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-08 17:00:24,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:00:28,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:00:32,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:00:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:00:54,225 INFO L93 Difference]: Finished difference Result 8054 states and 11047 transitions. [2024-11-08 17:00:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:00:54,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 147 [2024-11-08 17:00:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:00:54,255 INFO L225 Difference]: With dead ends: 8054 [2024-11-08 17:00:54,255 INFO L226 Difference]: Without dead ends: 4910 [2024-11-08 17:00:54,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:00:54,267 INFO L432 NwaCegarLoop]: 786 mSDtfsCounter, 1052 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 557 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:00:54,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 2978 Invalid, 2236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 1676 Invalid, 3 Unknown, 0 Unchecked, 33.1s Time] [2024-11-08 17:00:54,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4910 states. [2024-11-08 17:00:54,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4910 to 4238. [2024-11-08 17:00:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3201 states have (on average 1.3055295220243675) internal successors, (4179), 3257 states have internal predecessors, (4179), 759 states have call successors, (759), 272 states have call predecessors, (759), 277 states have return successors, (786), 752 states have call predecessors, (786), 758 states have call successors, (786) [2024-11-08 17:00:54,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5724 transitions. [2024-11-08 17:00:54,603 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5724 transitions. Word has length 147 [2024-11-08 17:00:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:00:54,603 INFO L471 AbstractCegarLoop]: Abstraction has 4238 states and 5724 transitions. [2024-11-08 17:00:54,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-08 17:00:54,604 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5724 transitions. [2024-11-08 17:00:54,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-08 17:00:54,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:00:54,610 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:00:54,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:00:54,611 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:00:54,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:00:54,611 INFO L85 PathProgramCache]: Analyzing trace with hash 543592965, now seen corresponding path program 1 times [2024-11-08 17:00:54,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:00:54,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441702318] [2024-11-08 17:00:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:00:54,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:00:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:58,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:00:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:58,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:00:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:00:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:00:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:00:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:00:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:00:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:00:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:00:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:00:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:00:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:00:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:00:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-08 17:00:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-08 17:00:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:00:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:00:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-11-08 17:00:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-11-08 17:00:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-08 17:00:59,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:00:59,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441702318] [2024-11-08 17:00:59,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441702318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:00:59,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:00:59,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:00:59,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5338404] [2024-11-08 17:00:59,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:00:59,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:00:59,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:00:59,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:00:59,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:00:59,477 INFO L87 Difference]: Start difference. First operand 4238 states and 5724 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-08 17:01:03,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:01:07,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:01:12,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:01:16,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:01:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:01:39,269 INFO L93 Difference]: Finished difference Result 10270 states and 13989 transitions. [2024-11-08 17:01:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:01:39,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 164 [2024-11-08 17:01:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:01:39,306 INFO L225 Difference]: With dead ends: 10270 [2024-11-08 17:01:39,306 INFO L226 Difference]: Without dead ends: 6064 [2024-11-08 17:01:39,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:01:39,321 INFO L432 NwaCegarLoop]: 1020 mSDtfsCounter, 907 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 444 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 3712 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:01:39,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 3712 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1975 Invalid, 4 Unknown, 0 Unchecked, 38.9s Time] [2024-11-08 17:01:39,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6064 states. [2024-11-08 17:01:39,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6064 to 5324. [2024-11-08 17:01:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5324 states, 4029 states have (on average 1.3018118639861007) internal successors, (5245), 4093 states have internal predecessors, (5245), 939 states have call successors, (939), 350 states have call predecessors, (939), 355 states have return successors, (966), 932 states have call predecessors, (966), 938 states have call successors, (966) [2024-11-08 17:01:39,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5324 states to 5324 states and 7150 transitions. [2024-11-08 17:01:39,785 INFO L78 Accepts]: Start accepts. Automaton has 5324 states and 7150 transitions. Word has length 164 [2024-11-08 17:01:39,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:01:39,785 INFO L471 AbstractCegarLoop]: Abstraction has 5324 states and 7150 transitions. [2024-11-08 17:01:39,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-08 17:01:39,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5324 states and 7150 transitions. [2024-11-08 17:01:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-08 17:01:39,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:01:39,793 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 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] [2024-11-08 17:01:39,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:01:39,793 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:01:39,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:01:39,795 INFO L85 PathProgramCache]: Analyzing trace with hash 146575302, now seen corresponding path program 1 times [2024-11-08 17:01:39,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:01:39,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893732665] [2024-11-08 17:01:39,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:01:39,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:01:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:01:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:01:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:01:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:01:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:01:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:01:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:01:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:01:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:01:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:01:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:01:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:01:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:01:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-08 17:01:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:43,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-11-08 17:01:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:44,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:01:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:44,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:01:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:44,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-08 17:01:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:44,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-11-08 17:01:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:01:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2024-11-08 17:01:44,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:01:44,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893732665] [2024-11-08 17:01:44,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893732665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:01:44,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:01:44,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:01:44,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117441260] [2024-11-08 17:01:44,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:01:44,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:01:44,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:01:44,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:01:44,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:01:44,075 INFO L87 Difference]: Start difference. First operand 5324 states and 7150 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-08 17:01:48,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:01:52,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:01:56,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:02:01,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:02:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:28,009 INFO L93 Difference]: Finished difference Result 14188 states and 19217 transitions. [2024-11-08 17:02:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:02:28,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 178 [2024-11-08 17:02:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:28,056 INFO L225 Difference]: With dead ends: 14188 [2024-11-08 17:02:28,056 INFO L226 Difference]: Without dead ends: 8896 [2024-11-08 17:02:28,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:02:28,073 INFO L432 NwaCegarLoop]: 1193 mSDtfsCounter, 1502 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 507 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:28,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 3367 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 2146 Invalid, 4 Unknown, 0 Unchecked, 42.5s Time] [2024-11-08 17:02:28,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8896 states. [2024-11-08 17:02:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8896 to 7566. [2024-11-08 17:02:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7566 states, 5769 states have (on average 1.3036921476859074) internal successors, (7521), 5861 states have internal predecessors, (7521), 1257 states have call successors, (1257), 528 states have call predecessors, (1257), 539 states have return successors, (1298), 1248 states have call predecessors, (1298), 1256 states have call successors, (1298) [2024-11-08 17:02:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7566 states to 7566 states and 10076 transitions. [2024-11-08 17:02:28,755 INFO L78 Accepts]: Start accepts. Automaton has 7566 states and 10076 transitions. Word has length 178 [2024-11-08 17:02:28,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:28,755 INFO L471 AbstractCegarLoop]: Abstraction has 7566 states and 10076 transitions. [2024-11-08 17:02:28,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-08 17:02:28,757 INFO L276 IsEmpty]: Start isEmpty. Operand 7566 states and 10076 transitions. [2024-11-08 17:02:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-08 17:02:28,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:28,775 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:02:28,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:02:28,775 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:02:28,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:28,776 INFO L85 PathProgramCache]: Analyzing trace with hash -889167939, now seen corresponding path program 1 times [2024-11-08 17:02:28,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:28,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129190650] [2024-11-08 17:02:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:28,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:02:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:02:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:02:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:02:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:02:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:02:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:02:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:02:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:02:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:02:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:02:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:02:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:02:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 17:02:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-08 17:02:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-11-08 17:02:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:02:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:02:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-11-08 17:02:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-08 17:02:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:33,729 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-08 17:02:33,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:33,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129190650] [2024-11-08 17:02:33,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129190650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:33,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716659975] [2024-11-08 17:02:33,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:33,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:33,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:02:33,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:02:33,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:02:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:38,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:02:38,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:02:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-08 17:02:41,211 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:02:41,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716659975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:02:41,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:02:41,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-08 17:02:41,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351676931] [2024-11-08 17:02:41,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:02:41,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:02:41,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:02:41,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:02:41,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:02:41,214 INFO L87 Difference]: Start difference. First operand 7566 states and 10076 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-08 17:02:45,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:02:51,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:02:51,809 INFO L93 Difference]: Finished difference Result 22636 states and 30141 transitions. [2024-11-08 17:02:51,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:02:51,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 197 [2024-11-08 17:02:51,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:02:51,906 INFO L225 Difference]: With dead ends: 22636 [2024-11-08 17:02:51,906 INFO L226 Difference]: Without dead ends: 22628 [2024-11-08 17:02:51,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:02:51,916 INFO L432 NwaCegarLoop]: 1456 mSDtfsCounter, 2585 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 187 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2585 SdHoareTripleChecker+Valid, 3332 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:02:51,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2585 Valid, 3332 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 328 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2024-11-08 17:02:51,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22628 states. [2024-11-08 17:02:54,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22628 to 22594. [2024-11-08 17:02:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22594 states, 17233 states have (on average 1.304648058956653) internal successors, (22483), 17525 states have internal predecessors, (22483), 3745 states have call successors, (3745), 1580 states have call predecessors, (3745), 1615 states have return successors, (3870), 3704 states have call predecessors, (3870), 3744 states have call successors, (3870) [2024-11-08 17:02:54,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22594 states to 22594 states and 30098 transitions. [2024-11-08 17:02:54,268 INFO L78 Accepts]: Start accepts. Automaton has 22594 states and 30098 transitions. Word has length 197 [2024-11-08 17:02:54,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:02:54,269 INFO L471 AbstractCegarLoop]: Abstraction has 22594 states and 30098 transitions. [2024-11-08 17:02:54,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-08 17:02:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 22594 states and 30098 transitions. [2024-11-08 17:02:54,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-08 17:02:54,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:02:54,300 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2024-11-08 17:02:54,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:02:54,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 17:02:54,502 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:02:54,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:02:54,503 INFO L85 PathProgramCache]: Analyzing trace with hash 775167895, now seen corresponding path program 1 times [2024-11-08 17:02:54,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:02:54,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886959604] [2024-11-08 17:02:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:02:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:02:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:02:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:02:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:02:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:02:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:02:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:02:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:02:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:02:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:02:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:02:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:02:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:02:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 17:02:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-08 17:02:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-11-08 17:02:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:02:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:02:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-11-08 17:02:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-08 17:02:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-11-08 17:02:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:02:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-11-08 17:02:59,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:02:59,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886959604] [2024-11-08 17:02:59,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886959604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:02:59,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788514079] [2024-11-08 17:02:59,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:02:59,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:02:59,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:00,000 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:00,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:03:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:05,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 3031 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:03:05,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2024-11-08 17:03:07,734 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:03:07,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788514079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:03:07,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:03:07,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 17:03:07,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383914722] [2024-11-08 17:03:07,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:03:07,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:03:07,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:07,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:03:07,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:03:07,738 INFO L87 Difference]: Start difference. First operand 22594 states and 30098 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-08 17:03:11,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:03:12,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:12,853 INFO L93 Difference]: Finished difference Result 34503 states and 45976 transitions. [2024-11-08 17:03:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:03:12,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 207 [2024-11-08 17:03:12,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:12,917 INFO L225 Difference]: With dead ends: 34503 [2024-11-08 17:03:12,918 INFO L226 Difference]: Without dead ends: 11186 [2024-11-08 17:03:12,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:03:12,979 INFO L432 NwaCegarLoop]: 1423 mSDtfsCounter, 985 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:12,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1804 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-08 17:03:12,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11186 states. [2024-11-08 17:03:14,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11186 to 11186. [2024-11-08 17:03:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11186 states, 8524 states have (on average 1.3023228531206006) internal successors, (11101), 8670 states have internal predecessors, (11101), 1861 states have call successors, (1861), 783 states have call predecessors, (1861), 800 states have return successors, (1923), 1840 states have call predecessors, (1923), 1860 states have call successors, (1923) [2024-11-08 17:03:14,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11186 states to 11186 states and 14885 transitions. [2024-11-08 17:03:14,378 INFO L78 Accepts]: Start accepts. Automaton has 11186 states and 14885 transitions. Word has length 207 [2024-11-08 17:03:14,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:14,379 INFO L471 AbstractCegarLoop]: Abstraction has 11186 states and 14885 transitions. [2024-11-08 17:03:14,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-08 17:03:14,379 INFO L276 IsEmpty]: Start isEmpty. Operand 11186 states and 14885 transitions. [2024-11-08 17:03:14,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-08 17:03:14,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:14,401 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:14,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:03:14,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:14,602 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:03:14,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:14,603 INFO L85 PathProgramCache]: Analyzing trace with hash 735152477, now seen corresponding path program 1 times [2024-11-08 17:03:14,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:14,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773934072] [2024-11-08 17:03:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:14,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:03:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:03:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:03:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:03:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:03:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:03:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:03:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:03:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:03:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:03:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:03:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:03:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:03:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 17:03:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-08 17:03:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:18,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-11-08 17:03:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:19,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:03:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:19,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:03:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:19,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-11-08 17:03:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:19,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-08 17:03:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 52 proven. 12 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-11-08 17:03:19,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:19,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773934072] [2024-11-08 17:03:19,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773934072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:19,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962336035] [2024-11-08 17:03:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:19,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:19,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:19,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:19,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:03:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:24,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:03:24,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:24,501 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2024-11-08 17:03:24,501 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:03:24,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962336035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:03:24,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:03:24,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 17:03:24,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279806477] [2024-11-08 17:03:24,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:03:24,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:03:24,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:24,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:03:24,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:03:24,505 INFO L87 Difference]: Start difference. First operand 11186 states and 14885 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-08 17:03:28,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:03:29,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:29,985 INFO L93 Difference]: Finished difference Result 20756 states and 27663 transitions. [2024-11-08 17:03:29,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:03:29,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 211 [2024-11-08 17:03:29,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:30,045 INFO L225 Difference]: With dead ends: 20756 [2024-11-08 17:03:30,046 INFO L226 Difference]: Without dead ends: 10439 [2024-11-08 17:03:30,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:03:30,075 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 912 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:30,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 2415 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-11-08 17:03:30,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10439 states. [2024-11-08 17:03:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10439 to 10431. [2024-11-08 17:03:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10431 states, 7958 states have (on average 1.301331992963056) internal successors, (10356), 8097 states have internal predecessors, (10356), 1729 states have call successors, (1729), 726 states have call predecessors, (1729), 743 states have return successors, (1791), 1709 states have call predecessors, (1791), 1728 states have call successors, (1791) [2024-11-08 17:03:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 13876 transitions. [2024-11-08 17:03:31,026 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 13876 transitions. Word has length 211 [2024-11-08 17:03:31,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:31,027 INFO L471 AbstractCegarLoop]: Abstraction has 10431 states and 13876 transitions. [2024-11-08 17:03:31,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-08 17:03:31,027 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 13876 transitions. [2024-11-08 17:03:31,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-08 17:03:31,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:31,045 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:31,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:03:31,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:31,246 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:03:31,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:31,247 INFO L85 PathProgramCache]: Analyzing trace with hash -897177649, now seen corresponding path program 1 times [2024-11-08 17:03:31,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:31,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937398767] [2024-11-08 17:03:31,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:31,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:03:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:03:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:03:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:03:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:03:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:03:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:03:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:03:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:03:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:03:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:03:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:03:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:03:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 17:03:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-08 17:03:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-11-08 17:03:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:03:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:03:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-11-08 17:03:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:35,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-08 17:03:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:36,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-11-08 17:03:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:36,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:03:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:36,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:03:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:36,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 17:03:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:36,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 17:03:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:36,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-08 17:03:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:36,403 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2024-11-08 17:03:36,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:36,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937398767] [2024-11-08 17:03:36,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937398767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:36,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228106977] [2024-11-08 17:03:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:36,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:36,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:36,407 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:36,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:03:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:41,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 3125 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:03:41,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-11-08 17:03:44,779 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:03:44,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228106977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:03:44,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:03:44,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-08 17:03:44,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347735566] [2024-11-08 17:03:44,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:03:44,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:03:44,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:44,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:03:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:03:44,782 INFO L87 Difference]: Start difference. First operand 10431 states and 13876 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-08 17:03:45,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:45,676 INFO L93 Difference]: Finished difference Result 25512 states and 33930 transitions. [2024-11-08 17:03:45,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:03:45,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 233 [2024-11-08 17:03:45,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:45,757 INFO L225 Difference]: With dead ends: 25512 [2024-11-08 17:03:45,757 INFO L226 Difference]: Without dead ends: 15117 [2024-11-08 17:03:45,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:03:45,788 INFO L432 NwaCegarLoop]: 1720 mSDtfsCounter, 1020 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:45,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 2617 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:03:45,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15117 states. [2024-11-08 17:03:46,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15117 to 14646. [2024-11-08 17:03:46,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14646 states, 11308 states have (on average 1.3131411390166254) internal successors, (14849), 11505 states have internal predecessors, (14849), 2264 states have call successors, (2264), 1044 states have call predecessors, (2264), 1073 states have return successors, (2360), 2241 states have call predecessors, (2360), 2263 states have call successors, (2360) [2024-11-08 17:03:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14646 states to 14646 states and 19473 transitions. [2024-11-08 17:03:46,948 INFO L78 Accepts]: Start accepts. Automaton has 14646 states and 19473 transitions. Word has length 233 [2024-11-08 17:03:46,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:46,949 INFO L471 AbstractCegarLoop]: Abstraction has 14646 states and 19473 transitions. [2024-11-08 17:03:46,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-08 17:03:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 14646 states and 19473 transitions. [2024-11-08 17:03:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-08 17:03:46,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:46,966 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:47,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:03:47,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 17:03:47,167 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:03:47,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:47,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1182208331, now seen corresponding path program 1 times [2024-11-08 17:03:47,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:47,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827812197] [2024-11-08 17:03:47,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:47,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:03:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:03:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:03:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:03:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:03:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:03:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:03:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:03:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:03:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:03:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:03:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:03:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:03:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:03:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 17:03:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-08 17:03:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:51,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-11-08 17:03:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:52,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:03:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:52,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:03:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:52,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-11-08 17:03:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:52,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-08 17:03:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:52,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-11-08 17:03:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:52,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-11-08 17:03:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:52,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:03:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:52,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:03:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-11-08 17:03:52,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:03:52,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827812197] [2024-11-08 17:03:52,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827812197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:03:52,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139034720] [2024-11-08 17:03:52,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:52,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:52,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:03:52,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:03:52,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:03:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:03:57,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 3136 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:03:57,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:03:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2024-11-08 17:03:57,660 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:03:57,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139034720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:03:57,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:03:57,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-08 17:03:57,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393542177] [2024-11-08 17:03:57,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:03:57,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:03:57,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:03:57,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:03:57,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:03:57,663 INFO L87 Difference]: Start difference. First operand 14646 states and 19473 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-08 17:03:58,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:03:58,685 INFO L93 Difference]: Finished difference Result 28934 states and 38482 transitions. [2024-11-08 17:03:58,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:03:58,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 245 [2024-11-08 17:03:58,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:03:58,748 INFO L225 Difference]: With dead ends: 28934 [2024-11-08 17:03:58,748 INFO L226 Difference]: Without dead ends: 14666 [2024-11-08 17:03:58,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:03:58,783 INFO L432 NwaCegarLoop]: 1114 mSDtfsCounter, 0 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3336 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:03:58,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3336 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:03:58,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14666 states. [2024-11-08 17:03:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14666 to 14666. [2024-11-08 17:03:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14666 states, 11328 states have (on average 1.312588276836158) internal successors, (14869), 11525 states have internal predecessors, (14869), 2264 states have call successors, (2264), 1044 states have call predecessors, (2264), 1073 states have return successors, (2360), 2241 states have call predecessors, (2360), 2263 states have call successors, (2360) [2024-11-08 17:03:59,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14666 states to 14666 states and 19493 transitions. [2024-11-08 17:03:59,659 INFO L78 Accepts]: Start accepts. Automaton has 14666 states and 19493 transitions. Word has length 245 [2024-11-08 17:03:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:03:59,659 INFO L471 AbstractCegarLoop]: Abstraction has 14666 states and 19493 transitions. [2024-11-08 17:03:59,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-08 17:03:59,660 INFO L276 IsEmpty]: Start isEmpty. Operand 14666 states and 19493 transitions. [2024-11-08 17:03:59,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-08 17:03:59,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:03:59,676 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:03:59,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:03:59,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:03:59,877 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:03:59,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:03:59,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1196876056, now seen corresponding path program 1 times [2024-11-08 17:03:59,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:03:59,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214544493] [2024-11-08 17:03:59,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:03:59,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:04:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:04:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:04:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:04:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:04:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:04:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:04:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:04:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:04:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:04:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:04:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:04:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:04:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 17:04:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-08 17:04:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:04:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-11-08 17:04:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:04:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:04:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-11-08 17:04:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:04:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:04:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-11-08 17:04:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-11-08 17:04:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-11-08 17:04:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-11-08 17:04:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:03,970 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-08 17:04:03,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:03,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214544493] [2024-11-08 17:04:03,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214544493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:04:03,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:04:03,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:04:03,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932315944] [2024-11-08 17:04:03,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:04:03,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:04:03,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:03,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:04:03,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:04:03,973 INFO L87 Difference]: Start difference. First operand 14666 states and 19493 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (27), 6 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-08 17:04:08,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:04:12,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:04:16,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:04:21,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:04:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:36,468 INFO L93 Difference]: Finished difference Result 32016 states and 43124 transitions. [2024-11-08 17:04:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:04:36,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (27), 6 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 242 [2024-11-08 17:04:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:36,559 INFO L225 Difference]: With dead ends: 32016 [2024-11-08 17:04:36,559 INFO L226 Difference]: Without dead ends: 17728 [2024-11-08 17:04:36,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:04:36,600 INFO L432 NwaCegarLoop]: 778 mSDtfsCounter, 894 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 620 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:36,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 2062 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 1101 Invalid, 4 Unknown, 0 Unchecked, 31.0s Time] [2024-11-08 17:04:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17728 states. [2024-11-08 17:04:37,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17728 to 14676. [2024-11-08 17:04:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14676 states, 11338 states have (on average 1.3123125771741049) internal successors, (14879), 11535 states have internal predecessors, (14879), 2264 states have call successors, (2264), 1044 states have call predecessors, (2264), 1073 states have return successors, (2360), 2241 states have call predecessors, (2360), 2263 states have call successors, (2360) [2024-11-08 17:04:37,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14676 states to 14676 states and 19503 transitions. [2024-11-08 17:04:37,897 INFO L78 Accepts]: Start accepts. Automaton has 14676 states and 19503 transitions. Word has length 242 [2024-11-08 17:04:37,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:37,897 INFO L471 AbstractCegarLoop]: Abstraction has 14676 states and 19503 transitions. [2024-11-08 17:04:37,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (27), 6 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-08 17:04:37,898 INFO L276 IsEmpty]: Start isEmpty. Operand 14676 states and 19503 transitions. [2024-11-08 17:04:37,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-08 17:04:37,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:37,911 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:04:37,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 17:04:37,911 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:04:37,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:37,912 INFO L85 PathProgramCache]: Analyzing trace with hash -92170732, now seen corresponding path program 1 times [2024-11-08 17:04:37,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:37,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504575045] [2024-11-08 17:04:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:37,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:04:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:04:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:04:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:04:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:04:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:04:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:04:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:04:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:04:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:04:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:04:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:04:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:04:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 17:04:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-08 17:04:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:04:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-11-08 17:04:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:04:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:04:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-08 17:04:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:04:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:04:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-11-08 17:04:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-11-08 17:04:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-11-08 17:04:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-11-08 17:04:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:42,757 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-08 17:04:42,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:42,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504575045] [2024-11-08 17:04:42,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504575045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:04:42,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144150191] [2024-11-08 17:04:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:42,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:42,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:04:42,761 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:04:42,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:04:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:49,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 3213 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:04:49,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:04:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-11-08 17:04:49,417 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:04:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144150191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:04:49,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:04:49,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 17:04:49,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535942872] [2024-11-08 17:04:49,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:04:49,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:04:49,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:49,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:04:49,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:04:49,421 INFO L87 Difference]: Start difference. First operand 14676 states and 19503 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-08 17:04:50,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:50,645 INFO L93 Difference]: Finished difference Result 29004 states and 38572 transitions. [2024-11-08 17:04:50,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:04:50,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 244 [2024-11-08 17:04:50,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:50,729 INFO L225 Difference]: With dead ends: 29004 [2024-11-08 17:04:50,729 INFO L226 Difference]: Without dead ends: 14706 [2024-11-08 17:04:50,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:04:50,767 INFO L432 NwaCegarLoop]: 1111 mSDtfsCounter, 26 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:50,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2175 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:04:50,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14706 states. [2024-11-08 17:04:52,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14706 to 14706. [2024-11-08 17:04:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14706 states, 11368 states have (on average 1.3123680506685433) internal successors, (14919), 11565 states have internal predecessors, (14919), 2264 states have call successors, (2264), 1044 states have call predecessors, (2264), 1073 states have return successors, (2360), 2241 states have call predecessors, (2360), 2263 states have call successors, (2360) [2024-11-08 17:04:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14706 states to 14706 states and 19543 transitions. [2024-11-08 17:04:52,230 INFO L78 Accepts]: Start accepts. Automaton has 14706 states and 19543 transitions. Word has length 244 [2024-11-08 17:04:52,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:52,231 INFO L471 AbstractCegarLoop]: Abstraction has 14706 states and 19543 transitions. [2024-11-08 17:04:52,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-08 17:04:52,231 INFO L276 IsEmpty]: Start isEmpty. Operand 14706 states and 19543 transitions. [2024-11-08 17:04:52,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-08 17:04:52,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:52,247 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:04:52,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 17:04:52,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:52,448 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:04:52,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:52,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2122203544, now seen corresponding path program 1 times [2024-11-08 17:04:52,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:52,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158029399] [2024-11-08 17:04:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:52,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:04:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:04:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:04:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:04:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:04:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:04:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:04:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:04:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:04:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:04:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:04:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:04:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:04:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 17:04:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-08 17:04:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:04:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-11-08 17:04:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:04:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:04:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:57,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-08 17:04:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:57,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:04:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:57,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:04:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:57,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-11-08 17:04:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:57,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-11-08 17:04:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:57,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-11-08 17:04:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:57,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-11-08 17:04:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:57,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-11-08 17:04:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-08 17:04:57,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:57,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158029399] [2024-11-08 17:04:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158029399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:04:57,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661325580] [2024-11-08 17:04:57,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:57,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:04:57,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:04:57,296 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:04:57,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:05:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:03,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 3238 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:05:03,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:05:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-11-08 17:05:03,983 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:05:03,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661325580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:03,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:05:03,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 17:05:03,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681830207] [2024-11-08 17:05:03,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:03,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:05:03,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:03,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:05:03,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:05:03,987 INFO L87 Difference]: Start difference. First operand 14706 states and 19543 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-08 17:05:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:05,127 INFO L93 Difference]: Finished difference Result 29074 states and 38662 transitions. [2024-11-08 17:05:05,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:05:05,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 247 [2024-11-08 17:05:05,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:05,206 INFO L225 Difference]: With dead ends: 29074 [2024-11-08 17:05:05,206 INFO L226 Difference]: Without dead ends: 14746 [2024-11-08 17:05:05,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:05:05,245 INFO L432 NwaCegarLoop]: 1112 mSDtfsCounter, 3 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:05,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2211 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:05:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14746 states. [2024-11-08 17:05:06,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14746 to 14726. [2024-11-08 17:05:06,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14726 states, 11388 states have (on average 1.3126975763962065) internal successors, (14949), 11585 states have internal predecessors, (14949), 2264 states have call successors, (2264), 1044 states have call predecessors, (2264), 1073 states have return successors, (2360), 2241 states have call predecessors, (2360), 2263 states have call successors, (2360) [2024-11-08 17:05:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14726 states to 14726 states and 19573 transitions. [2024-11-08 17:05:06,670 INFO L78 Accepts]: Start accepts. Automaton has 14726 states and 19573 transitions. Word has length 247 [2024-11-08 17:05:06,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:06,671 INFO L471 AbstractCegarLoop]: Abstraction has 14726 states and 19573 transitions. [2024-11-08 17:05:06,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-08 17:05:06,671 INFO L276 IsEmpty]: Start isEmpty. Operand 14726 states and 19573 transitions. [2024-11-08 17:05:06,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-08 17:05:06,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:06,687 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:06,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:05:06,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 17:05:06,888 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:05:06,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:06,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1641123286, now seen corresponding path program 1 times [2024-11-08 17:05:06,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:06,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299326699] [2024-11-08 17:05:06,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:06,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:10,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:05:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:10,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:05:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:10,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:05:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:10,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:05:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:10,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:05:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:10,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:05:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:10,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:05:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:10,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:05:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:10,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:05:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:10,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:05:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:10,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:05:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:05:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:05:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 17:05:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-08 17:05:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:05:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-11-08 17:05:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:05:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:05:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-08 17:05:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:05:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:05:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-11-08 17:05:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-11-08 17:05:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-11-08 17:05:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-11-08 17:05:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-11-08 17:05:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-08 17:05:11,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:11,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299326699] [2024-11-08 17:05:11,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299326699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:05:11,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274173522] [2024-11-08 17:05:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:11,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:05:11,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:05:11,537 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:05:11,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:05:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:16,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 3251 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:05:16,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:05:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-08 17:05:17,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:05:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-08 17:05:18,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274173522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:05:18,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:05:18,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2024-11-08 17:05:18,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217140671] [2024-11-08 17:05:18,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:05:18,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:05:18,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:05:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:05:18,959 INFO L87 Difference]: Start difference. First operand 14726 states and 19573 transitions. Second operand has 11 states, 11 states have (on average 16.727272727272727) internal successors, (184), 7 states have internal predecessors, (184), 2 states have call successors, (58), 6 states have call predecessors, (58), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-08 17:05:23,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:05:27,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:05:31,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:05:35,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:05:53,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:53,271 INFO L93 Difference]: Finished difference Result 32176 states and 43344 transitions. [2024-11-08 17:05:53,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:05:53,272 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 16.727272727272727) internal successors, (184), 7 states have internal predecessors, (184), 2 states have call successors, (58), 6 states have call predecessors, (58), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 247 [2024-11-08 17:05:53,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:53,352 INFO L225 Difference]: With dead ends: 32176 [2024-11-08 17:05:53,352 INFO L226 Difference]: Without dead ends: 17828 [2024-11-08 17:05:53,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:05:53,394 INFO L432 NwaCegarLoop]: 766 mSDtfsCounter, 921 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 637 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:53,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 2650 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 1214 Invalid, 4 Unknown, 0 Unchecked, 32.7s Time] [2024-11-08 17:05:53,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17828 states. [2024-11-08 17:05:54,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17828 to 14786. [2024-11-08 17:05:54,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14786 states, 11448 states have (on average 1.3110587002096437) internal successors, (15009), 11645 states have internal predecessors, (15009), 2264 states have call successors, (2264), 1044 states have call predecessors, (2264), 1073 states have return successors, (2360), 2241 states have call predecessors, (2360), 2263 states have call successors, (2360) [2024-11-08 17:05:54,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14786 states to 14786 states and 19633 transitions. [2024-11-08 17:05:54,733 INFO L78 Accepts]: Start accepts. Automaton has 14786 states and 19633 transitions. Word has length 247 [2024-11-08 17:05:54,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:54,733 INFO L471 AbstractCegarLoop]: Abstraction has 14786 states and 19633 transitions. [2024-11-08 17:05:54,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.727272727272727) internal successors, (184), 7 states have internal predecessors, (184), 2 states have call successors, (58), 6 states have call predecessors, (58), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-08 17:05:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand 14786 states and 19633 transitions. [2024-11-08 17:05:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-08 17:05:54,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:54,745 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:54,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:05:54,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 17:05:54,946 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:05:54,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:54,946 INFO L85 PathProgramCache]: Analyzing trace with hash -857559877, now seen corresponding path program 1 times [2024-11-08 17:05:54,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:54,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897907045] [2024-11-08 17:05:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:54,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:05:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:05:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:05:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:05:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:05:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:05:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:05:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:05:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:05:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:05:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:05:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:05:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:05:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 17:05:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-08 17:05:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-11-08 17:05:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:59,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-08 17:05:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:00,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-11-08 17:06:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:00,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:06:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:01,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:06:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:01,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-11-08 17:06:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:01,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-11-08 17:06:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:01,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-11-08 17:06:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:01,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-11-08 17:06:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:01,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:06:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:01,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:06:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-08 17:06:01,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:01,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897907045] [2024-11-08 17:06:01,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897907045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:01,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239473920] [2024-11-08 17:06:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:01,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:01,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:01,197 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:01,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:06:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:07,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 3160 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 17:06:07,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2024-11-08 17:06:11,701 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:06:11,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239473920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:11,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:06:11,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 18 [2024-11-08 17:06:11,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389217065] [2024-11-08 17:06:11,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:11,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:06:11,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:11,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:06:11,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2024-11-08 17:06:11,704 INFO L87 Difference]: Start difference. First operand 14786 states and 19633 transitions. Second operand has 12 states, 11 states have (on average 11.727272727272727) internal successors, (129), 9 states have internal predecessors, (129), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-08 17:06:15,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:06:15,233 INFO L93 Difference]: Finished difference Result 29540 states and 39322 transitions. [2024-11-08 17:06:15,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:06:15,234 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 11.727272727272727) internal successors, (129), 9 states have internal predecessors, (129), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) Word has length 255 [2024-11-08 17:06:15,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:06:15,297 INFO L225 Difference]: With dead ends: 29540 [2024-11-08 17:06:15,298 INFO L226 Difference]: Without dead ends: 15132 [2024-11-08 17:06:15,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2024-11-08 17:06:15,335 INFO L432 NwaCegarLoop]: 1151 mSDtfsCounter, 15 mSDsluCounter, 11456 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 12607 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:06:15,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 12607 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 17:06:15,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15132 states. [2024-11-08 17:06:16,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15132 to 14856. [2024-11-08 17:06:16,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14856 states, 11503 states have (on average 1.309571416152308) internal successors, (15064), 11695 states have internal predecessors, (15064), 2264 states have call successors, (2264), 1044 states have call predecessors, (2264), 1088 states have return successors, (2413), 2261 states have call predecessors, (2413), 2263 states have call successors, (2413) [2024-11-08 17:06:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14856 states to 14856 states and 19741 transitions. [2024-11-08 17:06:16,654 INFO L78 Accepts]: Start accepts. Automaton has 14856 states and 19741 transitions. Word has length 255 [2024-11-08 17:06:16,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:06:16,654 INFO L471 AbstractCegarLoop]: Abstraction has 14856 states and 19741 transitions. [2024-11-08 17:06:16,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.727272727272727) internal successors, (129), 9 states have internal predecessors, (129), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-08 17:06:16,655 INFO L276 IsEmpty]: Start isEmpty. Operand 14856 states and 19741 transitions. [2024-11-08 17:06:16,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-08 17:06:16,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:06:16,663 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:16,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 17:06:16,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:16,864 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:06:16,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:16,865 INFO L85 PathProgramCache]: Analyzing trace with hash 981124029, now seen corresponding path program 1 times [2024-11-08 17:06:16,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:16,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924919469] [2024-11-08 17:06:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:16,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:06:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:06:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:06:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:06:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:06:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:06:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:06:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:06:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:06:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:06:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:06:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:06:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:06:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 17:06:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-08 17:06:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-11-08 17:06:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-08 17:06:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:22,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-11-08 17:06:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:22,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:06:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:23,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:06:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:23,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-11-08 17:06:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:23,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-11-08 17:06:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:23,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-11-08 17:06:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:23,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-11-08 17:06:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:23,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:06:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-08 17:06:23,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924919469] [2024-11-08 17:06:23,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924919469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476432810] [2024-11-08 17:06:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:23,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:23,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:23,227 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:23,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:06:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:29,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 3134 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:06:29,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-08 17:06:30,402 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:06:30,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476432810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:30,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:06:30,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-08 17:06:30,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825102276] [2024-11-08 17:06:30,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:30,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:06:30,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:30,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:06:30,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:06:30,405 INFO L87 Difference]: Start difference. First operand 14856 states and 19741 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-08 17:06:34,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:06:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:06:36,513 INFO L93 Difference]: Finished difference Result 37250 states and 49450 transitions. [2024-11-08 17:06:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:06:36,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 249 [2024-11-08 17:06:36,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:06:36,594 INFO L225 Difference]: With dead ends: 37250 [2024-11-08 17:06:36,594 INFO L226 Difference]: Without dead ends: 22772 [2024-11-08 17:06:36,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:06:36,623 INFO L432 NwaCegarLoop]: 1953 mSDtfsCounter, 848 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 5010 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:06:36,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 5010 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-11-08 17:06:36,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22772 states. [2024-11-08 17:06:37,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22772 to 19616. [2024-11-08 17:06:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19616 states, 15231 states have (on average 1.3108134725231435) internal successors, (19965), 15484 states have internal predecessors, (19965), 2957 states have call successors, (2957), 1374 states have call predecessors, (2957), 1427 states have return successors, (3134), 2943 states have call predecessors, (3134), 2956 states have call successors, (3134) [2024-11-08 17:06:38,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19616 states to 19616 states and 26056 transitions. [2024-11-08 17:06:38,094 INFO L78 Accepts]: Start accepts. Automaton has 19616 states and 26056 transitions. Word has length 249 [2024-11-08 17:06:38,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:06:38,095 INFO L471 AbstractCegarLoop]: Abstraction has 19616 states and 26056 transitions. [2024-11-08 17:06:38,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-08 17:06:38,096 INFO L276 IsEmpty]: Start isEmpty. Operand 19616 states and 26056 transitions. [2024-11-08 17:06:38,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-08 17:06:38,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:06:38,106 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:38,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 17:06:38,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:38,307 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:06:38,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:38,307 INFO L85 PathProgramCache]: Analyzing trace with hash 636662882, now seen corresponding path program 2 times [2024-11-08 17:06:38,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:38,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579328161] [2024-11-08 17:06:38,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:38,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:06:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:06:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 17:06:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:06:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:06:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:06:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:06:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 17:06:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:06:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:06:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:06:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:06:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:06:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 17:06:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-08 17:06:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:06:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-08 17:06:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:06:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:43,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:06:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:44,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-11-08 17:06:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:44,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:06:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:44,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:06:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:44,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-11-08 17:06:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:44,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-11-08 17:06:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:44,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-11-08 17:06:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:44,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-11-08 17:06:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:44,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-11-08 17:06:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:44,380 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-08 17:06:44,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:44,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579328161] [2024-11-08 17:06:44,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579328161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:44,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207711304] [2024-11-08 17:06:44,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:06:44,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:44,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:44,383 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:44,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df934b3-8f64-4839-abb2-78eb9d77dc45/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process