./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 36ffbabf76f0a0e87302d8b80308134217d4fdef380ae154dfcdec710817c6e2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:36:43,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:36:43,991 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 17:36:43,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:36:43,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:36:44,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:36:44,020 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:36:44,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:36:44,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:36:44,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:36:44,022 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:36:44,023 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:36:44,023 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:36:44,024 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:36:44,024 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:36:44,025 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:36:44,030 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:36:44,031 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:36:44,031 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:36:44,032 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:36:44,032 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:36:44,033 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:36:44,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:36:44,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:36:44,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:36:44,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:36:44,036 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:36:44,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:36:44,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:36:44,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:36:44,037 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:36:44,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:36:44,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:36:44,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:36:44,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:36:44,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:36:44,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:36:44,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:36:44,039 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:36:44,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:36:44,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:36:44,040 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:36:44,040 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:36:44,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:36:44,041 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36ffbabf76f0a0e87302d8b80308134217d4fdef380ae154dfcdec710817c6e2 [2023-12-02 17:36:44,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:36:44,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:36:44,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:36:44,311 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:36:44,312 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:36:44,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2023-12-02 17:36:47,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:36:47,493 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:36:47,494 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2023-12-02 17:36:47,523 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/data/13430d33d/b208e9ea71d146f3ae13e8ef454b391a/FLAGa39395c1f [2023-12-02 17:36:47,535 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/data/13430d33d/b208e9ea71d146f3ae13e8ef454b391a [2023-12-02 17:36:47,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:36:47,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:36:47,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:36:47,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:36:47,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:36:47,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:36:47" (1/1) ... [2023-12-02 17:36:47,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@481cda9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:47, skipping insertion in model container [2023-12-02 17:36:47,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:36:47" (1/1) ... [2023-12-02 17:36:47,653 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:36:48,022 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2023-12-02 17:36:48,022 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3835-3836] [2023-12-02 17:36:48,477 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[119274,119287] [2023-12-02 17:36:49,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:36:49,361 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:36:49,433 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2023-12-02 17:36:49,433 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3835-3836] [2023-12-02 17:36:49,435 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"); [3918] [2023-12-02 17:36:49,437 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3925] [2023-12-02 17:36:49,437 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, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [3933-3934] [2023-12-02 17:36:49,438 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [3948-3949] [2023-12-02 17:36:49,440 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3980] [2023-12-02 17:36:49,440 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3983] [2023-12-02 17:36:49,441 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3986] [2023-12-02 17:36:49,441 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3989] [2023-12-02 17:36:49,443 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; cmpxchgb %2,%1": "=a" (__ret), "+m" (*__ptr): "q" (__new), "0" (__old): "memory"); [4038-4039] [2023-12-02 17:36:49,443 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; cmpxchgw %2,%1": "=a" (__ret), "+m" (*__ptr___0): "r" (__new), "0" (__old): "memory"); [4043-4044] [2023-12-02 17:36:49,444 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; cmpxchgl %2,%1": "=a" (__ret), "+m" (*__ptr___1): "r" (__new), "0" (__old): "memory"); [4048-4049] [2023-12-02 17:36:49,444 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; cmpxchgq %2,%1": "=a" (__ret), "+m" (*__ptr___2): "r" (__new), "0" (__old): "memory"); [4053-4054] [2023-12-02 17:36:49,452 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[119274,119287] [2023-12-02 17:36:49,579 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret), "+m" (tmp___0->state): : "memory", "cc"); [5875-5876] [2023-12-02 17:36:49,580 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret), "+m" (tmp___1->state): : "memory", "cc"); [5880-5881] [2023-12-02 17:36:49,580 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret), "+m" (tmp___2->state): : "memory", "cc"); [5885-5886] [2023-12-02 17:36:49,580 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret), "+m" (tmp___3->state): : "memory", "cc"); [5890-5891] [2023-12-02 17:36:49,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:36:49,768 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:36:49,768 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:36:49,769 WARN L675 CHandler]: The function __cmpxchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:36:49,769 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:36:49,769 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:36:49,775 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:36:49,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:49 WrapperNode [2023-12-02 17:36:49,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:36:49,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:36:49,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:36:49,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:36:49,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:49" (1/1) ... [2023-12-02 17:36:49,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:49" (1/1) ... [2023-12-02 17:36:50,017 INFO L138 Inliner]: procedures = 264, calls = 3816, calls flagged for inlining = 133, calls inlined = 113, statements flattened = 6927 [2023-12-02 17:36:50,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:36:50,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:36:50,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:36:50,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:36:50,029 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:49" (1/1) ... [2023-12-02 17:36:50,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:49" (1/1) ... [2023-12-02 17:36:50,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:49" (1/1) ... [2023-12-02 17:36:50,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:49" (1/1) ... [2023-12-02 17:36:50,218 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:49" (1/1) ... [2023-12-02 17:36:50,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:49" (1/1) ... [2023-12-02 17:36:50,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:49" (1/1) ... [2023-12-02 17:36:50,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:49" (1/1) ... [2023-12-02 17:36:50,321 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:36:50,322 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:36:50,322 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:36:50,322 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:36:50,323 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:49" (1/1) ... [2023-12-02 17:36:50,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:36:50,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:36:50,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:36:50,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:36:50,385 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2023-12-02 17:36:50,385 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2023-12-02 17:36:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2023-12-02 17:36:50,386 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2023-12-02 17:36:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2023-12-02 17:36:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-12-02 17:36:50,386 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-12-02 17:36:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-12-02 17:36:50,386 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-12-02 17:36:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-12-02 17:36:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 17:36:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 17:36:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 17:36:50,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 17:36:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-12-02 17:36:50,387 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-12-02 17:36:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2023-12-02 17:36:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2023-12-02 17:36:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-12-02 17:36:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-12-02 17:36:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-12-02 17:36:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-12-02 17:36:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 17:36:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 17:36:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-12-02 17:36:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-12-02 17:36:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2023-12-02 17:36:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2023-12-02 17:36:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2023-12-02 17:36:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2023-12-02 17:36:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 17:36:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 17:36:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-12-02 17:36:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-12-02 17:36:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 17:36:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 17:36:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-12-02 17:36:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-12-02 17:36:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2023-12-02 17:36:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2023-12-02 17:36:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 17:36:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 17:36:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 17:36:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 17:36:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 17:36:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 17:36:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2023-12-02 17:36:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2023-12-02 17:36:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2023-12-02 17:36:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2023-12-02 17:36:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2023-12-02 17:36:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2023-12-02 17:36:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:36:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-12-02 17:36:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 17:36:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 17:36:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 17:36:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2023-12-02 17:36:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2023-12-02 17:36:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-12-02 17:36:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-12-02 17:36:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 17:36:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2023-12-02 17:36:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2023-12-02 17:36:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2023-12-02 17:36:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2023-12-02 17:36:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-12-02 17:36:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-12-02 17:36:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 17:36:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 17:36:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:36:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 17:36:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-12-02 17:36:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-12-02 17:36:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 17:36:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 17:36:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2023-12-02 17:36:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2023-12-02 17:36:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 17:36:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 17:36:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2023-12-02 17:36:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2023-12-02 17:36:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-12-02 17:36:50,396 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-12-02 17:36:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2023-12-02 17:36:50,396 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2023-12-02 17:36:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_from_anchor [2023-12-02 17:36:50,396 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_from_anchor [2023-12-02 17:36:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-12-02 17:36:50,396 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-12-02 17:36:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 17:36:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 17:36:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 17:36:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-12-02 17:36:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-12-02 17:36:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2023-12-02 17:36:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2023-12-02 17:36:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-12-02 17:36:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-12-02 17:36:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 17:36:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2023-12-02 17:36:50,398 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2023-12-02 17:36:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 17:36:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2023-12-02 17:36:50,398 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2023-12-02 17:36:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-12-02 17:36:50,398 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-12-02 17:36:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 17:36:50,398 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 17:36:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-12-02 17:36:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-12-02 17:36:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2023-12-02 17:36:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2023-12-02 17:36:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2023-12-02 17:36:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2023-12-02 17:36:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 17:36:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 17:36:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-12-02 17:36:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-12-02 17:36:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-12-02 17:36:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-12-02 17:36:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2023-12-02 17:36:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2023-12-02 17:36:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2023-12-02 17:36:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2023-12-02 17:36:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-12-02 17:36:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-12-02 17:36:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 17:36:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 17:36:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 17:36:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-12-02 17:36:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-12-02 17:36:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2023-12-02 17:36:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2023-12-02 17:36:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-12-02 17:36:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-12-02 17:36:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2023-12-02 17:36:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2023-12-02 17:36:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2023-12-02 17:36:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2023-12-02 17:36:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-12-02 17:36:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-12-02 17:36:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 17:36:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 17:36:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2023-12-02 17:36:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2023-12-02 17:36:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2023-12-02 17:36:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2023-12-02 17:36:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 17:36:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:36:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 17:36:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 17:36:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-12-02 17:36:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-12-02 17:36:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-12-02 17:36:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-12-02 17:36:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-12-02 17:36:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-12-02 17:36:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_dtr_rts [2023-12-02 17:36:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_dtr_rts [2023-12-02 17:36:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-12-02 17:36:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-12-02 17:36:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-12-02 17:36:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-12-02 17:36:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2023-12-02 17:36:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2023-12-02 17:36:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2023-12-02 17:36:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2023-12-02 17:36:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2023-12-02 17:36:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2023-12-02 17:36:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2023-12-02 17:36:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2023-12-02 17:36:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-12-02 17:36:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-12-02 17:36:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 17:36:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 17:36:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-12-02 17:36:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-12-02 17:36:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:36:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-12-02 17:36:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-12-02 17:36:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-12-02 17:36:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-12-02 17:36:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2023-12-02 17:36:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2023-12-02 17:36:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:36:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:36:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2023-12-02 17:36:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2023-12-02 17:36:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 17:36:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 17:36:51,011 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:36:51,015 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:36:51,258 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 17:37:01,349 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:37:02,485 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:37:02,485 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 17:37:02,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:37:02 BoogieIcfgContainer [2023-12-02 17:37:02,488 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:37:02,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:37:02,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:37:02,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:37:02,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:36:47" (1/3) ... [2023-12-02 17:37:02,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7442bba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:37:02, skipping insertion in model container [2023-12-02 17:37:02,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:49" (2/3) ... [2023-12-02 17:37:02,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7442bba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:37:02, skipping insertion in model container [2023-12-02 17:37:02,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:37:02" (3/3) ... [2023-12-02 17:37:02,497 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2023-12-02 17:37:02,517 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:37:02,517 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:37:02,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:37:02,606 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@545a8051, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:37:02,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:37:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 1235 states, 776 states have (on average 1.347938144329897) internal successors, (1046), 791 states have internal predecessors, (1046), 373 states have call successors, (373), 85 states have call predecessors, (373), 84 states have return successors, (365), 365 states have call predecessors, (365), 365 states have call successors, (365) [2023-12-02 17:37:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 17:37:02,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:02,648 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:37:02,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:37:02,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:02,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1274201999, now seen corresponding path program 1 times [2023-12-02 17:37:02,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:37:02,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286417911] [2023-12-02 17:37:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:02,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:37:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:37:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 17:37:03,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:37:03,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286417911] [2023-12-02 17:37:03,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286417911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:37:03,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:37:03,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:37:03,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064909862] [2023-12-02 17:37:03,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:37:03,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:37:03,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:37:03,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:37:03,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:03,597 INFO L87 Difference]: Start difference. First operand has 1235 states, 776 states have (on average 1.347938144329897) internal successors, (1046), 791 states have internal predecessors, (1046), 373 states have call successors, (373), 85 states have call predecessors, (373), 84 states have return successors, (365), 365 states have call predecessors, (365), 365 states have call successors, (365) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 17:37:06,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:08,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:10,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:12,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:14,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:15,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:37:15,175 INFO L93 Difference]: Finished difference Result 3284 states and 4767 transitions. [2023-12-02 17:37:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:37:15,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 122 [2023-12-02 17:37:15,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:37:15,204 INFO L225 Difference]: With dead ends: 3284 [2023-12-02 17:37:15,204 INFO L226 Difference]: Without dead ends: 2051 [2023-12-02 17:37:15,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:15,218 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1241 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 3059 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:37:15,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 3059 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 474 Invalid, 3 Unknown, 0 Unchecked, 11.4s Time] [2023-12-02 17:37:15,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2023-12-02 17:37:15,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 2047. [2023-12-02 17:37:15,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 1289 states have (on average 1.3281613653995346) internal successors, (1712), 1299 states have internal predecessors, (1712), 610 states have call successors, (610), 148 states have call predecessors, (610), 147 states have return successors, (609), 608 states have call predecessors, (609), 609 states have call successors, (609) [2023-12-02 17:37:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 2931 transitions. [2023-12-02 17:37:15,403 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 2931 transitions. Word has length 122 [2023-12-02 17:37:15,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:37:15,404 INFO L495 AbstractCegarLoop]: Abstraction has 2047 states and 2931 transitions. [2023-12-02 17:37:15,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 17:37:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 2931 transitions. [2023-12-02 17:37:15,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-02 17:37:15,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:15,411 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:37:15,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:37:15,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:37:15,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:15,412 INFO L85 PathProgramCache]: Analyzing trace with hash 84572104, now seen corresponding path program 1 times [2023-12-02 17:37:15,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:37:15,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918541806] [2023-12-02 17:37:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:15,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:37:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:37:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 17:37:15,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:37:15,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918541806] [2023-12-02 17:37:15,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918541806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:37:15,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:37:15,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:37:15,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605518700] [2023-12-02 17:37:15,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:37:15,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:37:15,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:37:15,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:37:15,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:15,947 INFO L87 Difference]: Start difference. First operand 2047 states and 2931 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 17:37:18,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:20,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:23,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:25,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:27,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:37:27,727 INFO L93 Difference]: Finished difference Result 5868 states and 8370 transitions. [2023-12-02 17:37:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:37:27,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 123 [2023-12-02 17:37:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:37:27,757 INFO L225 Difference]: With dead ends: 5868 [2023-12-02 17:37:27,758 INFO L226 Difference]: Without dead ends: 3852 [2023-12-02 17:37:27,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:27,768 INFO L413 NwaCegarLoop]: 2052 mSDtfsCounter, 1577 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3552 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:37:27,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3552 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 454 Invalid, 3 Unknown, 0 Unchecked, 11.6s Time] [2023-12-02 17:37:27,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2023-12-02 17:37:27,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 3849. [2023-12-02 17:37:27,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 2430 states have (on average 1.3292181069958848) internal successors, (3230), 2449 states have internal predecessors, (3230), 1126 states have call successors, (1126), 293 states have call predecessors, (1126), 292 states have return successors, (1125), 1124 states have call predecessors, (1125), 1125 states have call successors, (1125) [2023-12-02 17:37:28,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 5481 transitions. [2023-12-02 17:37:28,020 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 5481 transitions. Word has length 123 [2023-12-02 17:37:28,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:37:28,021 INFO L495 AbstractCegarLoop]: Abstraction has 3849 states and 5481 transitions. [2023-12-02 17:37:28,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 17:37:28,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 5481 transitions. [2023-12-02 17:37:28,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-02 17:37:28,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:28,031 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:37:28,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:37:28,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:37:28,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:28,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1588309876, now seen corresponding path program 1 times [2023-12-02 17:37:28,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:37:28,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721348674] [2023-12-02 17:37:28,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:28,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:37:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:37:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 17:37:28,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:37:28,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721348674] [2023-12-02 17:37:28,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721348674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:37:28,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:37:28,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:37:28,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129571043] [2023-12-02 17:37:28,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:37:28,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:37:28,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:37:28,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:37:28,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:28,497 INFO L87 Difference]: Start difference. First operand 3849 states and 5481 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 17:37:30,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:33,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:35,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:37,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:39,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:37:39,694 INFO L93 Difference]: Finished difference Result 9209 states and 13070 transitions. [2023-12-02 17:37:39,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:37:39,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 129 [2023-12-02 17:37:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:37:39,720 INFO L225 Difference]: With dead ends: 9209 [2023-12-02 17:37:39,720 INFO L226 Difference]: Without dead ends: 5391 [2023-12-02 17:37:39,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:39,731 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 963 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:37:39,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 3074 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 410 Invalid, 4 Unknown, 0 Unchecked, 11.0s Time] [2023-12-02 17:37:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5391 states. [2023-12-02 17:37:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5391 to 5388. [2023-12-02 17:37:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5388 states, 3448 states have (on average 1.339907192575406) internal successors, (4620), 3472 states have internal predecessors, (4620), 1505 states have call successors, (1505), 435 states have call predecessors, (1505), 434 states have return successors, (1504), 1502 states have call predecessors, (1504), 1504 states have call successors, (1504) [2023-12-02 17:37:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 7629 transitions. [2023-12-02 17:37:39,975 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 7629 transitions. Word has length 129 [2023-12-02 17:37:39,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:37:39,976 INFO L495 AbstractCegarLoop]: Abstraction has 5388 states and 7629 transitions. [2023-12-02 17:37:39,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 17:37:39,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 7629 transitions. [2023-12-02 17:37:39,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-02 17:37:39,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:39,984 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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] [2023-12-02 17:37:39,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:37:39,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:37:39,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:39,985 INFO L85 PathProgramCache]: Analyzing trace with hash 372565735, now seen corresponding path program 1 times [2023-12-02 17:37:39,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:37:39,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750341900] [2023-12-02 17:37:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:39,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:37:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:37:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-02 17:37:40,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:37:40,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750341900] [2023-12-02 17:37:40,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750341900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:37:40,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:37:40,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:37:40,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705764] [2023-12-02 17:37:40,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:37:40,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:37:40,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:37:40,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:37:40,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:37:40,947 INFO L87 Difference]: Start difference. First operand 5388 states and 7629 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 17:37:43,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:45,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:48,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:51,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:52,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:37:52,588 INFO L93 Difference]: Finished difference Result 13456 states and 19576 transitions. [2023-12-02 17:37:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:37:52,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 170 [2023-12-02 17:37:52,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:37:52,628 INFO L225 Difference]: With dead ends: 13456 [2023-12-02 17:37:52,628 INFO L226 Difference]: Without dead ends: 8110 [2023-12-02 17:37:52,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:37:52,641 INFO L413 NwaCegarLoop]: 2256 mSDtfsCounter, 2418 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 219 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2418 SdHoareTripleChecker+Valid, 4013 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:37:52,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2418 Valid, 4013 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 673 Invalid, 4 Unknown, 0 Unchecked, 11.3s Time] [2023-12-02 17:37:52,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8110 states. [2023-12-02 17:37:52,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8110 to 5392. [2023-12-02 17:37:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 3452 states have (on average 1.339513325608343) internal successors, (4624), 3476 states have internal predecessors, (4624), 1505 states have call successors, (1505), 435 states have call predecessors, (1505), 434 states have return successors, (1504), 1502 states have call predecessors, (1504), 1504 states have call successors, (1504) [2023-12-02 17:37:52,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 7633 transitions. [2023-12-02 17:37:52,932 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 7633 transitions. Word has length 170 [2023-12-02 17:37:52,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:37:52,933 INFO L495 AbstractCegarLoop]: Abstraction has 5392 states and 7633 transitions. [2023-12-02 17:37:52,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 17:37:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 7633 transitions. [2023-12-02 17:37:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-02 17:37:52,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:52,941 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 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] [2023-12-02 17:37:52,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:37:52,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:37:52,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:52,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2084006571, now seen corresponding path program 1 times [2023-12-02 17:37:52,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:37:52,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570571687] [2023-12-02 17:37:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:52,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:37:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:37:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-02 17:37:53,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:37:53,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570571687] [2023-12-02 17:37:53,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570571687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:37:53,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:37:53,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:37:53,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497293049] [2023-12-02 17:37:53,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:37:53,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:37:53,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:37:53,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:37:53,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:37:53,441 INFO L87 Difference]: Start difference. First operand 5392 states and 7633 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 17:37:56,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:58,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:00,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:03,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:05,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:06,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:07,663 INFO L93 Difference]: Finished difference Result 10766 states and 15238 transitions. [2023-12-02 17:38:07,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:38:07,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 167 [2023-12-02 17:38:07,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:07,696 INFO L225 Difference]: With dead ends: 10766 [2023-12-02 17:38:07,696 INFO L226 Difference]: Without dead ends: 5392 [2023-12-02 17:38:07,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:38:07,715 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 3 mSDsluCounter, 3115 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4675 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:07,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4675 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 587 Invalid, 5 Unknown, 0 Unchecked, 14.0s Time] [2023-12-02 17:38:07,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5392 states. [2023-12-02 17:38:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5392 to 5392. [2023-12-02 17:38:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 3452 states have (on average 1.3371958285052143) internal successors, (4616), 3476 states have internal predecessors, (4616), 1505 states have call successors, (1505), 435 states have call predecessors, (1505), 434 states have return successors, (1504), 1502 states have call predecessors, (1504), 1504 states have call successors, (1504) [2023-12-02 17:38:08,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 7625 transitions. [2023-12-02 17:38:08,053 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 7625 transitions. Word has length 167 [2023-12-02 17:38:08,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:08,054 INFO L495 AbstractCegarLoop]: Abstraction has 5392 states and 7625 transitions. [2023-12-02 17:38:08,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 17:38:08,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 7625 transitions. [2023-12-02 17:38:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-02 17:38:08,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:08,064 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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] [2023-12-02 17:38:08,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 17:38:08,064 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:38:08,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:08,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1948548642, now seen corresponding path program 1 times [2023-12-02 17:38:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:08,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414681704] [2023-12-02 17:38:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:08,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-02 17:38:09,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:09,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414681704] [2023-12-02 17:38:09,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414681704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:09,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:09,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:38:09,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931199222] [2023-12-02 17:38:09,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:09,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:38:09,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:09,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:38:09,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:38:09,137 INFO L87 Difference]: Start difference. First operand 5392 states and 7625 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 17:38:11,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:13,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:15,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:17,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:21,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:23,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:25,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:27,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:29,196 INFO L93 Difference]: Finished difference Result 10720 states and 15158 transitions. [2023-12-02 17:38:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:38:29,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 172 [2023-12-02 17:38:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:29,222 INFO L225 Difference]: With dead ends: 10720 [2023-12-02 17:38:29,222 INFO L226 Difference]: Without dead ends: 5290 [2023-12-02 17:38:29,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:38:29,238 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 4 mSDsluCounter, 4661 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6218 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:29,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6218 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 784 Invalid, 6 Unknown, 0 Unchecked, 19.8s Time] [2023-12-02 17:38:29,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5290 states. [2023-12-02 17:38:29,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5290 to 5274. [2023-12-02 17:38:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 3374 states have (on average 1.3384706579727326) internal successors, (4516), 3403 states have internal predecessors, (4516), 1479 states have call successors, (1479), 421 states have call predecessors, (1479), 420 states have return successors, (1478), 1471 states have call predecessors, (1478), 1478 states have call successors, (1478) [2023-12-02 17:38:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 7473 transitions. [2023-12-02 17:38:29,521 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 7473 transitions. Word has length 172 [2023-12-02 17:38:29,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:29,521 INFO L495 AbstractCegarLoop]: Abstraction has 5274 states and 7473 transitions. [2023-12-02 17:38:29,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 17:38:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 7473 transitions. [2023-12-02 17:38:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 17:38:29,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:29,533 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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] [2023-12-02 17:38:29,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 17:38:29,533 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:38:29,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1708851595, now seen corresponding path program 1 times [2023-12-02 17:38:29,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:29,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351739770] [2023-12-02 17:38:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:29,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 17:38:30,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:30,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351739770] [2023-12-02 17:38:30,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351739770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:30,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:30,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:38:30,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172693501] [2023-12-02 17:38:30,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:30,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:30,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:30,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:30,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:30,582 INFO L87 Difference]: Start difference. First operand 5274 states and 7473 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-02 17:38:33,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:35,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:38,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:40,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:42,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:44,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:44,129 INFO L93 Difference]: Finished difference Result 13507 states and 19141 transitions. [2023-12-02 17:38:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:38:44,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 175 [2023-12-02 17:38:44,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:44,163 INFO L225 Difference]: With dead ends: 13507 [2023-12-02 17:38:44,163 INFO L226 Difference]: Without dead ends: 8275 [2023-12-02 17:38:44,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:44,180 INFO L413 NwaCegarLoop]: 2019 mSDtfsCounter, 1556 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 53 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 3448 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:44,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 3448 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 542 Invalid, 4 Unknown, 0 Unchecked, 13.2s Time] [2023-12-02 17:38:44,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8275 states. [2023-12-02 17:38:44,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8275 to 8271. [2023-12-02 17:38:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8271 states, 5334 states have (on average 1.3295838020247468) internal successors, (7092), 5379 states have internal predecessors, (7092), 2261 states have call successors, (2261), 676 states have call predecessors, (2261), 675 states have return successors, (2260), 2249 states have call predecessors, (2260), 2260 states have call successors, (2260) [2023-12-02 17:38:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8271 states to 8271 states and 11613 transitions. [2023-12-02 17:38:44,651 INFO L78 Accepts]: Start accepts. Automaton has 8271 states and 11613 transitions. Word has length 175 [2023-12-02 17:38:44,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:44,651 INFO L495 AbstractCegarLoop]: Abstraction has 8271 states and 11613 transitions. [2023-12-02 17:38:44,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-02 17:38:44,652 INFO L276 IsEmpty]: Start isEmpty. Operand 8271 states and 11613 transitions. [2023-12-02 17:38:44,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-02 17:38:44,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:44,659 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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] [2023-12-02 17:38:44,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 17:38:44,659 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:38:44,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:44,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1930046994, now seen corresponding path program 1 times [2023-12-02 17:38:44,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:44,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897944866] [2023-12-02 17:38:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:44,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2023-12-02 17:38:45,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:45,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897944866] [2023-12-02 17:38:45,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897944866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:45,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:45,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:38:45,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250309527] [2023-12-02 17:38:45,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:45,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:38:45,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:45,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:38:45,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:38:45,861 INFO L87 Difference]: Start difference. First operand 8271 states and 11613 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-02 17:38:48,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:50,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:53,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:55,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:38:56,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:56,189 INFO L93 Difference]: Finished difference Result 8595 states and 11956 transitions. [2023-12-02 17:38:56,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:38:56,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 176 [2023-12-02 17:38:56,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:56,218 INFO L225 Difference]: With dead ends: 8595 [2023-12-02 17:38:56,218 INFO L226 Difference]: Without dead ends: 8592 [2023-12-02 17:38:56,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:38:56,223 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 1554 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:56,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 3279 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 415 Invalid, 4 Unknown, 0 Unchecked, 10.1s Time] [2023-12-02 17:38:56,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2023-12-02 17:38:56,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 8592. [2023-12-02 17:38:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8592 states, 5524 states have (on average 1.3247646632874728) internal successors, (7318), 5569 states have internal predecessors, (7318), 2313 states have call successors, (2313), 755 states have call predecessors, (2313), 754 states have return successors, (2312), 2301 states have call predecessors, (2312), 2312 states have call successors, (2312) [2023-12-02 17:38:56,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8592 states to 8592 states and 11943 transitions. [2023-12-02 17:38:56,652 INFO L78 Accepts]: Start accepts. Automaton has 8592 states and 11943 transitions. Word has length 176 [2023-12-02 17:38:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:56,653 INFO L495 AbstractCegarLoop]: Abstraction has 8592 states and 11943 transitions. [2023-12-02 17:38:56,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-02 17:38:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 8592 states and 11943 transitions. [2023-12-02 17:38:56,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-02 17:38:56,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:56,662 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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] [2023-12-02 17:38:56,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 17:38:56,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:38:56,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash -715631334, now seen corresponding path program 1 times [2023-12-02 17:38:56,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:56,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426484104] [2023-12-02 17:38:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:56,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 17:38:57,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:57,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426484104] [2023-12-02 17:38:57,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426484104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:57,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:57,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:38:57,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128665171] [2023-12-02 17:38:57,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:57,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:57,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:57,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:57,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:57,298 INFO L87 Difference]: Start difference. First operand 8592 states and 11943 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-12-02 17:38:59,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:01,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:04,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:07,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:07,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:39:07,709 INFO L93 Difference]: Finished difference Result 19826 states and 27465 transitions. [2023-12-02 17:39:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:39:07,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 182 [2023-12-02 17:39:07,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:39:07,738 INFO L225 Difference]: With dead ends: 19826 [2023-12-02 17:39:07,738 INFO L226 Difference]: Without dead ends: 11276 [2023-12-02 17:39:07,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:39:07,754 INFO L413 NwaCegarLoop]: 1744 mSDtfsCounter, 1479 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 9 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:39:07,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 2785 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 370 Invalid, 4 Unknown, 0 Unchecked, 10.0s Time] [2023-12-02 17:39:07,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11276 states. [2023-12-02 17:39:08,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11276 to 11255. [2023-12-02 17:39:08,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11255 states, 7311 states have (on average 1.3277253453699904) internal successors, (9707), 7368 states have internal predecessors, (9707), 2907 states have call successors, (2907), 1037 states have call predecessors, (2907), 1036 states have return successors, (2906), 2889 states have call predecessors, (2906), 2906 states have call successors, (2906) [2023-12-02 17:39:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11255 states to 11255 states and 15520 transitions. [2023-12-02 17:39:08,318 INFO L78 Accepts]: Start accepts. Automaton has 11255 states and 15520 transitions. Word has length 182 [2023-12-02 17:39:08,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:39:08,318 INFO L495 AbstractCegarLoop]: Abstraction has 11255 states and 15520 transitions. [2023-12-02 17:39:08,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-12-02 17:39:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand 11255 states and 15520 transitions. [2023-12-02 17:39:08,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-02 17:39:08,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:39:08,338 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:39:08,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 17:39:08,338 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:39:08,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:39:08,339 INFO L85 PathProgramCache]: Analyzing trace with hash -639737301, now seen corresponding path program 1 times [2023-12-02 17:39:08,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:39:08,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116510844] [2023-12-02 17:39:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:39:08,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:39:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:39:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2023-12-02 17:39:11,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:39:11,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116510844] [2023-12-02 17:39:11,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116510844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:39:11,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:39:11,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:39:11,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444229643] [2023-12-02 17:39:11,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:39:11,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:39:11,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:39:11,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:39:11,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:39:11,555 INFO L87 Difference]: Start difference. First operand 11255 states and 15520 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 17:39:13,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:15,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:17,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:19,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:21,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:26,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:28,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:30,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:32,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:35,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:39:35,648 INFO L93 Difference]: Finished difference Result 22638 states and 31247 transitions. [2023-12-02 17:39:35,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 17:39:35,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 193 [2023-12-02 17:39:35,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:39:35,705 INFO L225 Difference]: With dead ends: 22638 [2023-12-02 17:39:35,706 INFO L226 Difference]: Without dead ends: 11366 [2023-12-02 17:39:35,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:39:35,729 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 157 mSDsluCounter, 6146 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 7694 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:39:35,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 7694 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 955 Invalid, 9 Unknown, 0 Unchecked, 23.6s Time] [2023-12-02 17:39:35,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11366 states. [2023-12-02 17:39:36,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11366 to 11353. [2023-12-02 17:39:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11353 states, 7378 states have (on average 1.3273244781783682) internal successors, (9793), 7451 states have internal predecessors, (9793), 2917 states have call successors, (2917), 1043 states have call predecessors, (2917), 1057 states have return successors, (2967), 2898 states have call predecessors, (2967), 2916 states have call successors, (2967) [2023-12-02 17:39:36,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11353 states to 11353 states and 15677 transitions. [2023-12-02 17:39:36,408 INFO L78 Accepts]: Start accepts. Automaton has 11353 states and 15677 transitions. Word has length 193 [2023-12-02 17:39:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:39:36,409 INFO L495 AbstractCegarLoop]: Abstraction has 11353 states and 15677 transitions. [2023-12-02 17:39:36,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 17:39:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 11353 states and 15677 transitions. [2023-12-02 17:39:36,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-02 17:39:36,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:39:36,429 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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] [2023-12-02 17:39:36,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 17:39:36,429 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:39:36,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:39:36,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1940761022, now seen corresponding path program 1 times [2023-12-02 17:39:36,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:39:36,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709299455] [2023-12-02 17:39:36,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:39:36,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:39:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:39:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2023-12-02 17:39:37,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:39:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709299455] [2023-12-02 17:39:37,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709299455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:39:37,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:39:37,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:39:37,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908094405] [2023-12-02 17:39:37,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:39:37,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:39:37,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:39:37,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:39:37,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:39:37,879 INFO L87 Difference]: Start difference. First operand 11353 states and 15677 transitions. Second operand has 4 states, 3 states have (on average 27.333333333333332) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 17:39:40,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:42,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:44,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:47,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:49,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:51,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:39:52,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:39:52,510 INFO L93 Difference]: Finished difference Result 22695 states and 31356 transitions. [2023-12-02 17:39:52,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:39:52,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 27.333333333333332) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 207 [2023-12-02 17:39:52,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:39:52,544 INFO L225 Difference]: With dead ends: 22695 [2023-12-02 17:39:52,544 INFO L226 Difference]: Without dead ends: 11382 [2023-12-02 17:39:52,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:39:52,565 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 5 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4631 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:39:52,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4631 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 588 Invalid, 5 Unknown, 0 Unchecked, 14.1s Time] [2023-12-02 17:39:52,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11382 states. [2023-12-02 17:39:52,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11382 to 11354. [2023-12-02 17:39:52,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11354 states, 7379 states have (on average 1.327280119257352) internal successors, (9794), 7452 states have internal predecessors, (9794), 2917 states have call successors, (2917), 1043 states have call predecessors, (2917), 1057 states have return successors, (2967), 2898 states have call predecessors, (2967), 2916 states have call successors, (2967) [2023-12-02 17:39:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11354 states to 11354 states and 15678 transitions. [2023-12-02 17:39:53,015 INFO L78 Accepts]: Start accepts. Automaton has 11354 states and 15678 transitions. Word has length 207 [2023-12-02 17:39:53,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:39:53,015 INFO L495 AbstractCegarLoop]: Abstraction has 11354 states and 15678 transitions. [2023-12-02 17:39:53,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 27.333333333333332) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 17:39:53,015 INFO L276 IsEmpty]: Start isEmpty. Operand 11354 states and 15678 transitions. [2023-12-02 17:39:53,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-02 17:39:53,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:39:53,027 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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] [2023-12-02 17:39:53,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 17:39:53,027 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:39:53,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:39:53,027 INFO L85 PathProgramCache]: Analyzing trace with hash 793165111, now seen corresponding path program 1 times [2023-12-02 17:39:53,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:39:53,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875717225] [2023-12-02 17:39:53,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:39:53,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:39:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:39:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2023-12-02 17:39:54,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:39:54,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875717225] [2023-12-02 17:39:54,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875717225] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:39:54,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339997633] [2023-12-02 17:39:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:39:54,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:39:54,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:39:54,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:39:54,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d399a177-901e-44fd-a18d-0908f8df4778/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:40:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:40:01,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 6414 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:40:01,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:40:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 224 proven. 1 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-12-02 17:40:01,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:40:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2023-12-02 17:40:01,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339997633] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:40:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1462098365] [2023-12-02 17:40:01,639 INFO L159 IcfgInterpreter]: Started Sifa with 120 locations of interest [2023-12-02 17:40:01,639 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:40:01,643 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:40:01,648 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:40:01,648 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:41:55,813 WARN L293 SmtUtils]: Spent 9.86s on a formula simplification that was a NOOP. DAG size: 4852 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 17:43:43,246 WARN L293 SmtUtils]: Spent 9.91s on a formula simplification that was a NOOP. DAG size: 4852 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 17:45:08,282 WARN L293 SmtUtils]: Spent 9.71s on a formula simplification that was a NOOP. DAG size: 4852 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 17:46:28,008 WARN L293 SmtUtils]: Spent 10.28s on a formula simplification that was a NOOP. DAG size: 4852 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 17:47:32,227 WARN L293 SmtUtils]: Spent 21.12s on a formula simplification that was a NOOP. DAG size: 9893 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:47:53,820 WARN L293 SmtUtils]: Spent 21.57s on a formula simplification that was a NOOP. DAG size: 9893 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:48:25,366 WARN L293 SmtUtils]: Spent 31.51s on a formula simplification. DAG size of input: 9895 DAG size of output: 9893 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:48:47,576 WARN L293 SmtUtils]: Spent 22.20s on a formula simplification that was a NOOP. DAG size: 9893 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:49:09,903 WARN L293 SmtUtils]: Spent 22.31s on a formula simplification that was a NOOP. DAG size: 9893 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:49:43,016 WARN L293 SmtUtils]: Spent 33.08s on a formula simplification. DAG size of input: 9895 DAG size of output: 9893 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)