./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.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_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/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_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/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_210df177-7aaa-44eb-ba20-710852b1f4e2/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 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:10:06,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:10:07,001 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 16:10:07,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:10:07,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:10:07,030 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:10:07,030 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:10:07,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:10:07,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:10:07,032 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:10:07,033 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:10:07,033 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:10:07,034 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:10:07,034 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:10:07,035 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:10:07,035 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:10:07,036 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:10:07,036 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:10:07,037 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:10:07,037 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:10:07,038 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:10:07,039 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:10:07,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:10:07,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:10:07,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:10:07,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:10:07,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:10:07,042 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:10:07,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:10:07,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:10:07,043 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:10:07,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:10:07,044 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:10:07,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:10:07,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:10:07,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:10:07,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:10:07,045 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:10:07,045 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:10:07,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:10:07,045 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:10:07,046 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:10:07,046 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:10:07,046 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:10:07,046 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_210df177-7aaa-44eb-ba20-710852b1f4e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 [2023-12-02 16:10:07,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:10:07,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:10:07,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:10:07,292 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:10:07,292 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:10:07,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2023-12-02 16:10:10,085 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:10:10,530 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:10:10,531 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2023-12-02 16:10:10,568 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/data/f2c244db6/3cdac34f13504d3fbab275adaf9aaf04/FLAG7ce8eb6d5 [2023-12-02 16:10:10,580 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/data/f2c244db6/3cdac34f13504d3fbab275adaf9aaf04 [2023-12-02 16:10:10,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:10:10,583 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:10:10,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:10:10,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:10:10,589 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:10:10,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:10:10" (1/1) ... [2023-12-02 16:10:10,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc33556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:10, skipping insertion in model container [2023-12-02 16:10:10,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:10:10" (1/1) ... [2023-12-02 16:10:10,742 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:10:12,639 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_210df177-7aaa-44eb-ba20-710852b1f4e2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2023-12-02 16:10:12,643 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_210df177-7aaa-44eb-ba20-710852b1f4e2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2023-12-02 16:10:12,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:10:12,699 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:10:12,801 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3837] [2023-12-02 16:10:12,805 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3892] [2023-12-02 16:10:12,805 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3895] [2023-12-02 16:10:12,805 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3898] [2023-12-02 16:10:12,805 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3901] [2023-12-02 16:10:12,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4621] [2023-12-02 16:10:12,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4627] [2023-12-02 16:10:12,839 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret), "+m" (tmp___5->state): : "memory", "cc"); [4742-4743] [2023-12-02 16:10:12,839 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret), "+m" (tmp___6->state): : "memory", "cc"); [4749-4750] [2023-12-02 16:10:12,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret), "+m" (tmp___7->state): : "memory", "cc"); [4756-4757] [2023-12-02 16:10:12,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret), "+m" (tmp___8->state): : "memory", "cc"); [4763-4764] [2023-12-02 16:10:12,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [5499] [2023-12-02 16:10:13,046 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_210df177-7aaa-44eb-ba20-710852b1f4e2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2023-12-02 16:10:13,047 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_210df177-7aaa-44eb-ba20-710852b1f4e2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2023-12-02 16:10:13,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:10:13,158 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:10:13,158 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:10:13,166 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:10:13,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:13 WrapperNode [2023-12-02 16:10:13,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:10:13,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:10:13,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:10:13,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:10:13,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:13" (1/1) ... [2023-12-02 16:10:13,242 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:13" (1/1) ... [2023-12-02 16:10:13,407 INFO L138 Inliner]: procedures = 363, calls = 3045, calls flagged for inlining = 178, calls inlined = 134, statements flattened = 5257 [2023-12-02 16:10:13,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:10:13,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:10:13,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:10:13,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:10:13,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:13" (1/1) ... [2023-12-02 16:10:13,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:13" (1/1) ... [2023-12-02 16:10:13,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:13" (1/1) ... [2023-12-02 16:10:13,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:13" (1/1) ... [2023-12-02 16:10:13,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:13" (1/1) ... [2023-12-02 16:10:13,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:13" (1/1) ... [2023-12-02 16:10:13,569 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:13" (1/1) ... [2023-12-02 16:10:13,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:13" (1/1) ... [2023-12-02 16:10:13,611 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:10:13,612 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:10:13,612 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:10:13,612 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:10:13,613 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:13" (1/1) ... [2023-12-02 16:10:13,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:10:13,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:10:13,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:10:13,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:10:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 16:10:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 16:10:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-12-02 16:10:13,714 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-12-02 16:10:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-12-02 16:10:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 16:10:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 16:10:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 16:10:13,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 16:10:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 16:10:13,715 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 16:10:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2023-12-02 16:10:13,715 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2023-12-02 16:10:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-12-02 16:10:13,715 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-12-02 16:10:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-12-02 16:10:13,715 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-12-02 16:10:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 16:10:13,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 16:10:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2023-12-02 16:10:13,716 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2023-12-02 16:10:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-12-02 16:10:13,716 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-12-02 16:10:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 16:10:13,716 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 16:10:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2023-12-02 16:10:13,716 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2023-12-02 16:10:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2023-12-02 16:10:13,717 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2023-12-02 16:10:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_5_4 [2023-12-02 16:10:13,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_5_4 [2023-12-02 16:10:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-12-02 16:10:13,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-12-02 16:10:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:10:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-12-02 16:10:13,718 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-12-02 16:10:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 16:10:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 16:10:13,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 16:10:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 16:10:13,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 16:10:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2023-12-02 16:10:13,718 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2023-12-02 16:10:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:10:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 16:10:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2023-12-02 16:10:13,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2023-12-02 16:10:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 16:10:13,719 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 16:10:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 16:10:13,719 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 16:10:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2023-12-02 16:10:13,720 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2023-12-02 16:10:13,720 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 16:10:13,720 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 16:10:13,720 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 16:10:13,720 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 16:10:13,720 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-12-02 16:10:13,720 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-12-02 16:10:13,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 16:10:13,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 16:10:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2023-12-02 16:10:13,721 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2023-12-02 16:10:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-12-02 16:10:13,721 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-12-02 16:10:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 16:10:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 16:10:13,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 16:10:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-12-02 16:10:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-12-02 16:10:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-12-02 16:10:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-12-02 16:10:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 16:10:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 16:10:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 16:10:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-12-02 16:10:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-12-02 16:10:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2023-12-02 16:10:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2023-12-02 16:10:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2023-12-02 16:10:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2023-12-02 16:10:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:10:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-12-02 16:10:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-12-02 16:10:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2023-12-02 16:10:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2023-12-02 16:10:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 16:10:13,724 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 16:10:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-12-02 16:10:13,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-12-02 16:10:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-12-02 16:10:13,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-12-02 16:10:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-12-02 16:10:13,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-12-02 16:10:13,725 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-12-02 16:10:13,725 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-12-02 16:10:13,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-12-02 16:10:13,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-12-02 16:10:13,725 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-12-02 16:10:13,725 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-12-02 16:10:13,725 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 16:10:13,726 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 16:10:13,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:10:13,726 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2023-12-02 16:10:13,726 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2023-12-02 16:10:13,726 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-12-02 16:10:13,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-12-02 16:10:13,726 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2023-12-02 16:10:13,726 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2023-12-02 16:10:13,727 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2023-12-02 16:10:13,727 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2023-12-02 16:10:13,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 16:10:13,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 16:10:13,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 16:10:13,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-12-02 16:10:13,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-12-02 16:10:13,732 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2023-12-02 16:10:13,732 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2023-12-02 16:10:13,732 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-12-02 16:10:13,732 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-12-02 16:10:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:10:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 16:10:13,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 16:10:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 16:10:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-12-02 16:10:13,733 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-12-02 16:10:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 16:10:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2023-12-02 16:10:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2023-12-02 16:10:13,734 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2023-12-02 16:10:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2023-12-02 16:10:13,734 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 16:10:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 16:10:13,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2023-12-02 16:10:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2023-12-02 16:10:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-12-02 16:10:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-12-02 16:10:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2023-12-02 16:10:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2023-12-02 16:10:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-12-02 16:10:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-12-02 16:10:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 16:10:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 16:10:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-12-02 16:10:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-12-02 16:10:13,737 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2023-12-02 16:10:13,737 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2023-12-02 16:10:13,737 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2023-12-02 16:10:13,737 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2023-12-02 16:10:13,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:10:13,737 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-12-02 16:10:13,737 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-12-02 16:10:13,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 16:10:13,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 16:10:13,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:10:13,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:10:14,340 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:10:14,343 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:10:14,531 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 16:10:33,189 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-12-02 16:10:33,311 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:10:34,161 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:10:34,162 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-02 16:10:34,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:10:34 BoogieIcfgContainer [2023-12-02 16:10:34,163 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:10:34,165 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:10:34,165 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:10:34,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:10:34,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:10:10" (1/3) ... [2023-12-02 16:10:34,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e528cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:10:34, skipping insertion in model container [2023-12-02 16:10:34,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:10:13" (2/3) ... [2023-12-02 16:10:34,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e528cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:10:34, skipping insertion in model container [2023-12-02 16:10:34,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:10:34" (3/3) ... [2023-12-02 16:10:34,170 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2023-12-02 16:10:34,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:10:34,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:10:34,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:10:34,256 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;@24339c2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:10:34,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:10:34,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 1246 states, 755 states have (on average 1.3139072847682118) internal successors, (992), 764 states have internal predecessors, (992), 423 states have call successors, (423), 69 states have call predecessors, (423), 68 states have return successors, (417), 416 states have call predecessors, (417), 417 states have call successors, (417) [2023-12-02 16:10:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-02 16:10:34,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:10:34,298 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:10:34,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:10:34,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:10:34,303 INFO L85 PathProgramCache]: Analyzing trace with hash 102118182, now seen corresponding path program 1 times [2023-12-02 16:10:34,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:10:34,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479638169] [2023-12-02 16:10:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:10:34,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:10:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:10:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2023-12-02 16:10:35,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:10:35,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479638169] [2023-12-02 16:10:35,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479638169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:10:35,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:10:35,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:10:35,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374179859] [2023-12-02 16:10:35,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:10:35,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:10:35,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:10:35,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:10:35,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:10:35,370 INFO L87 Difference]: Start difference. First operand has 1246 states, 755 states have (on average 1.3139072847682118) internal successors, (992), 764 states have internal predecessors, (992), 423 states have call successors, (423), 69 states have call predecessors, (423), 68 states have return successors, (417), 416 states have call predecessors, (417), 417 states have call successors, (417) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 16:10:37,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:10:40,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:10:40,298 INFO L93 Difference]: Finished difference Result 3103 states and 4601 transitions. [2023-12-02 16:10:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:10:40,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 239 [2023-12-02 16:10:40,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:10:40,331 INFO L225 Difference]: With dead ends: 3103 [2023-12-02 16:10:40,331 INFO L226 Difference]: Without dead ends: 1822 [2023-12-02 16:10:40,343 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 16:10:40,346 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 946 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:10:40,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 3203 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-02 16:10:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2023-12-02 16:10:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1818. [2023-12-02 16:10:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1127 states have (on average 1.31055900621118) internal successors, (1477), 1139 states have internal predecessors, (1477), 587 states have call successors, (587), 103 states have call predecessors, (587), 103 states have return successors, (587), 584 states have call predecessors, (587), 587 states have call successors, (587) [2023-12-02 16:10:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2651 transitions. [2023-12-02 16:10:40,545 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2651 transitions. Word has length 239 [2023-12-02 16:10:40,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:10:40,547 INFO L495 AbstractCegarLoop]: Abstraction has 1818 states and 2651 transitions. [2023-12-02 16:10:40,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 16:10:40,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2651 transitions. [2023-12-02 16:10:40,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-02 16:10:40,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:10:40,559 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 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] [2023-12-02 16:10:40,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:10:40,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:10:40,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:10:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash 563180087, now seen corresponding path program 1 times [2023-12-02 16:10:40,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:10:40,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584968306] [2023-12-02 16:10:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:10:40,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:10:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:10:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2023-12-02 16:10:41,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:10:41,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584968306] [2023-12-02 16:10:41,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584968306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:10:41,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:10:41,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:10:41,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975086122] [2023-12-02 16:10:41,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:10:41,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:10:41,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:10:41,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:10:41,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:10:41,077 INFO L87 Difference]: Start difference. First operand 1818 states and 2651 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-12-02 16:10:43,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:10:46,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:10:46,890 INFO L93 Difference]: Finished difference Result 5260 states and 7666 transitions. [2023-12-02 16:10:46,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:10:46,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 252 [2023-12-02 16:10:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:10:46,916 INFO L225 Difference]: With dead ends: 5260 [2023-12-02 16:10:46,916 INFO L226 Difference]: Without dead ends: 3481 [2023-12-02 16:10:46,922 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 16:10:46,923 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 1591 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:10:46,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 3094 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-02 16:10:46,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2023-12-02 16:10:47,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 3475. [2023-12-02 16:10:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3475 states, 2158 states have (on average 1.3123262279888785) internal successors, (2832), 2186 states have internal predecessors, (2832), 1113 states have call successors, (1113), 203 states have call predecessors, (1113), 203 states have return successors, (1113), 1103 states have call predecessors, (1113), 1113 states have call successors, (1113) [2023-12-02 16:10:47,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3475 states to 3475 states and 5058 transitions. [2023-12-02 16:10:47,102 INFO L78 Accepts]: Start accepts. Automaton has 3475 states and 5058 transitions. Word has length 252 [2023-12-02 16:10:47,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:10:47,103 INFO L495 AbstractCegarLoop]: Abstraction has 3475 states and 5058 transitions. [2023-12-02 16:10:47,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-12-02 16:10:47,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3475 states and 5058 transitions. [2023-12-02 16:10:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-02 16:10:47,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:10:47,116 INFO L195 NwaCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:10:47,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:10:47,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:10:47,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:10:47,117 INFO L85 PathProgramCache]: Analyzing trace with hash 882301460, now seen corresponding path program 1 times [2023-12-02 16:10:47,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:10:47,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517047942] [2023-12-02 16:10:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:10:47,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:10:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:10:47,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2023-12-02 16:10:47,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:10:47,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517047942] [2023-12-02 16:10:47,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517047942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:10:47,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:10:47,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:10:47,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707154346] [2023-12-02 16:10:47,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:10:47,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:10:47,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:10:47,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:10:47,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:10:47,521 INFO L87 Difference]: Start difference. First operand 3475 states and 5058 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-12-02 16:10:52,091 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 16:10:53,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:10:53,215 INFO L93 Difference]: Finished difference Result 8094 states and 11758 transitions. [2023-12-02 16:10:53,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:10:53,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 259 [2023-12-02 16:10:53,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:10:53,253 INFO L225 Difference]: With dead ends: 8094 [2023-12-02 16:10:53,253 INFO L226 Difference]: Without dead ends: 4658 [2023-12-02 16:10:53,267 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 16:10:53,268 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 883 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:10:53,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 3111 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 409 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2023-12-02 16:10:53,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2023-12-02 16:10:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4654. [2023-12-02 16:10:53,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4654 states, 2908 states have (on average 1.311898211829436) internal successors, (3815), 2942 states have internal predecessors, (3815), 1468 states have call successors, (1468), 277 states have call predecessors, (1468), 277 states have return successors, (1468), 1454 states have call predecessors, (1468), 1468 states have call successors, (1468) [2023-12-02 16:10:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 6751 transitions. [2023-12-02 16:10:53,557 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 6751 transitions. Word has length 259 [2023-12-02 16:10:53,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:10:53,558 INFO L495 AbstractCegarLoop]: Abstraction has 4654 states and 6751 transitions. [2023-12-02 16:10:53,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-12-02 16:10:53,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 6751 transitions. [2023-12-02 16:10:53,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-02 16:10:53,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:10:53,568 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 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] [2023-12-02 16:10:53,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:10:53,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:10:53,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:10:53,569 INFO L85 PathProgramCache]: Analyzing trace with hash 408211081, now seen corresponding path program 1 times [2023-12-02 16:10:53,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:10:53,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970897868] [2023-12-02 16:10:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:10:53,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:10:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:10:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2023-12-02 16:10:54,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:10:54,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970897868] [2023-12-02 16:10:54,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970897868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:10:54,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:10:54,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:10:54,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662628391] [2023-12-02 16:10:54,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:10:54,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:10:54,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:10:54,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:10:54,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:10:54,045 INFO L87 Difference]: Start difference. First operand 4654 states and 6751 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-12-02 16:10:55,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:10:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:10:59,001 INFO L93 Difference]: Finished difference Result 13548 states and 19597 transitions. [2023-12-02 16:10:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:10:59,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 259 [2023-12-02 16:10:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:10:59,052 INFO L225 Difference]: With dead ends: 13548 [2023-12-02 16:10:59,052 INFO L226 Difference]: Without dead ends: 8933 [2023-12-02 16:10:59,068 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 16:10:59,069 INFO L413 NwaCegarLoop]: 1728 mSDtfsCounter, 1585 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:10:59,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 3262 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-02 16:10:59,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8933 states. [2023-12-02 16:10:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8933 to 8925. [2023-12-02 16:10:59,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8925 states, 5561 states have (on average 1.3035425283222442) internal successors, (7249), 5635 states have internal predecessors, (7249), 2809 states have call successors, (2809), 554 states have call predecessors, (2809), 554 states have return successors, (2809), 2775 states have call predecessors, (2809), 2809 states have call successors, (2809) [2023-12-02 16:10:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8925 states to 8925 states and 12867 transitions. [2023-12-02 16:10:59,531 INFO L78 Accepts]: Start accepts. Automaton has 8925 states and 12867 transitions. Word has length 259 [2023-12-02 16:10:59,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:10:59,532 INFO L495 AbstractCegarLoop]: Abstraction has 8925 states and 12867 transitions. [2023-12-02 16:10:59,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-12-02 16:10:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 8925 states and 12867 transitions. [2023-12-02 16:10:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-02 16:10:59,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:10:59,547 INFO L195 NwaCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 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] [2023-12-02 16:10:59,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 16:10:59,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:10:59,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:10:59,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1097046156, now seen corresponding path program 1 times [2023-12-02 16:10:59,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:10:59,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341688913] [2023-12-02 16:10:59,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:10:59,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:10:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:11:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1455 trivial. 0 not checked. [2023-12-02 16:11:00,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:11:00,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341688913] [2023-12-02 16:11:00,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341688913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:11:00,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:11:00,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:11:00,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057742713] [2023-12-02 16:11:00,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:11:00,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:11:00,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:11:00,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:11:00,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:11:00,099 INFO L87 Difference]: Start difference. First operand 8925 states and 12867 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-02 16:11:04,008 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 16:11:06,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:11:06,023 INFO L93 Difference]: Finished difference Result 18390 states and 26420 transitions. [2023-12-02 16:11:06,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:11:06,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 268 [2023-12-02 16:11:06,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:11:06,080 INFO L225 Difference]: With dead ends: 18390 [2023-12-02 16:11:06,081 INFO L226 Difference]: Without dead ends: 9504 [2023-12-02 16:11:06,106 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 16:11:06,106 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 677 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:11:06,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 3086 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 424 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2023-12-02 16:11:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9504 states. [2023-12-02 16:11:06,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9504 to 9502. [2023-12-02 16:11:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9502 states, 5922 states have (on average 1.298885511651469) internal successors, (7692), 5997 states have internal predecessors, (7692), 2956 states have call successors, (2956), 623 states have call predecessors, (2956), 623 states have return successors, (2956), 2922 states have call predecessors, (2956), 2956 states have call successors, (2956) [2023-12-02 16:11:06,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9502 states to 9502 states and 13604 transitions. [2023-12-02 16:11:06,520 INFO L78 Accepts]: Start accepts. Automaton has 9502 states and 13604 transitions. Word has length 268 [2023-12-02 16:11:06,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:11:06,521 INFO L495 AbstractCegarLoop]: Abstraction has 9502 states and 13604 transitions. [2023-12-02 16:11:06,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-02 16:11:06,521 INFO L276 IsEmpty]: Start isEmpty. Operand 9502 states and 13604 transitions. [2023-12-02 16:11:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-02 16:11:06,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:11:06,528 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:11:06,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 16:11:06,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:11:06,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:11:06,529 INFO L85 PathProgramCache]: Analyzing trace with hash 437623384, now seen corresponding path program 1 times [2023-12-02 16:11:06,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:11:06,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80607450] [2023-12-02 16:11:06,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:11:06,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:11:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:11:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2023-12-02 16:11:06,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:11:06,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80607450] [2023-12-02 16:11:06,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80607450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:11:06,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:11:06,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:11:06,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871886558] [2023-12-02 16:11:06,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:11:06,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:11:06,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:11:06,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:11:06,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:11:06,822 INFO L87 Difference]: Start difference. First operand 9502 states and 13604 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-12-02 16:11:09,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:11:10,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:11:13,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:11:15,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:11:15,130 INFO L93 Difference]: Finished difference Result 26867 states and 38327 transitions. [2023-12-02 16:11:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:11:15,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 280 [2023-12-02 16:11:15,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:11:15,202 INFO L225 Difference]: With dead ends: 26867 [2023-12-02 16:11:15,202 INFO L226 Difference]: Without dead ends: 17404 [2023-12-02 16:11:15,259 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 16:11:15,260 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 1538 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:11:15,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 3082 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 435 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2023-12-02 16:11:15,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17404 states. [2023-12-02 16:11:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17404 to 17378. [2023-12-02 16:11:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17378 states, 10874 states have (on average 1.2929004965973883) internal successors, (14059), 11047 states have internal predecessors, (14059), 5290 states have call successors, (5290), 1213 states have call predecessors, (5290), 1213 states have return successors, (5290), 5198 states have call predecessors, (5290), 5290 states have call successors, (5290) [2023-12-02 16:11:16,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17378 states to 17378 states and 24639 transitions. [2023-12-02 16:11:16,279 INFO L78 Accepts]: Start accepts. Automaton has 17378 states and 24639 transitions. Word has length 280 [2023-12-02 16:11:16,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:11:16,279 INFO L495 AbstractCegarLoop]: Abstraction has 17378 states and 24639 transitions. [2023-12-02 16:11:16,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-12-02 16:11:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 17378 states and 24639 transitions. [2023-12-02 16:11:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-12-02 16:11:16,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:11:16,293 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:11:16,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 16:11:16,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:11:16,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:11:16,294 INFO L85 PathProgramCache]: Analyzing trace with hash 98701143, now seen corresponding path program 1 times [2023-12-02 16:11:16,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:11:16,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664593547] [2023-12-02 16:11:16,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:11:16,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:11:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:11:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2023-12-02 16:11:16,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:11:16,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664593547] [2023-12-02 16:11:16,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664593547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:11:16,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:11:16,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:11:16,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620741657] [2023-12-02 16:11:16,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:11:16,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:11:16,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:11:16,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:11:16,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:11:16,605 INFO L87 Difference]: Start difference. First operand 17378 states and 24639 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, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-12-02 16:11:19,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:11:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:11:23,706 INFO L93 Difference]: Finished difference Result 47842 states and 67638 transitions. [2023-12-02 16:11:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:11:23,707 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, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 289 [2023-12-02 16:11:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:11:23,830 INFO L225 Difference]: With dead ends: 47842 [2023-12-02 16:11:23,830 INFO L226 Difference]: Without dead ends: 30503 [2023-12-02 16:11:23,872 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 16:11:23,873 INFO L413 NwaCegarLoop]: 1793 mSDtfsCounter, 1520 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:11:23,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 3319 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-02 16:11:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30503 states. [2023-12-02 16:11:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30503 to 30477. [2023-12-02 16:11:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30477 states, 19201 states have (on average 1.2849851570230717) internal successors, (24673), 19557 states have internal predecessors, (24673), 9067 states have call successors, (9067), 2208 states have call predecessors, (9067), 2208 states have return successors, (9067), 8859 states have call predecessors, (9067), 9067 states have call successors, (9067) [2023-12-02 16:11:25,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30477 states to 30477 states and 42807 transitions. [2023-12-02 16:11:25,196 INFO L78 Accepts]: Start accepts. Automaton has 30477 states and 42807 transitions. Word has length 289 [2023-12-02 16:11:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:11:25,197 INFO L495 AbstractCegarLoop]: Abstraction has 30477 states and 42807 transitions. [2023-12-02 16:11:25,197 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, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-12-02 16:11:25,197 INFO L276 IsEmpty]: Start isEmpty. Operand 30477 states and 42807 transitions. [2023-12-02 16:11:25,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-02 16:11:25,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:11:25,220 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:11:25,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 16:11:25,220 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:11:25,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:11:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash -735094060, now seen corresponding path program 1 times [2023-12-02 16:11:25,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:11:25,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777786295] [2023-12-02 16:11:25,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:11:25,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:11:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:11:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1623 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1611 trivial. 0 not checked. [2023-12-02 16:11:25,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:11:25,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777786295] [2023-12-02 16:11:25,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777786295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:11:25,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:11:25,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:11:25,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219008093] [2023-12-02 16:11:25,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:11:25,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:11:25,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:11:25,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:11:25,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:11:25,655 INFO L87 Difference]: Start difference. First operand 30477 states and 42807 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-12-02 16:11:28,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:11:29,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:11:32,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:11:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:11:35,479 INFO L93 Difference]: Finished difference Result 68433 states and 95932 transitions. [2023-12-02 16:11:35,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:11:35,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 308 [2023-12-02 16:11:35,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:11:35,651 INFO L225 Difference]: With dead ends: 68433 [2023-12-02 16:11:35,651 INFO L226 Difference]: Without dead ends: 38089 [2023-12-02 16:11:35,715 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 16:11:35,715 INFO L413 NwaCegarLoop]: 2325 mSDtfsCounter, 1466 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:11:35,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 3335 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 502 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2023-12-02 16:11:35,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38089 states. [2023-12-02 16:11:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38089 to 38055. [2023-12-02 16:11:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38055 states, 24001 states have (on average 1.2819465855589351) internal successors, (30768), 24449 states have internal predecessors, (30768), 11165 states have call successors, (11165), 2888 states have call predecessors, (11165), 2888 states have return successors, (11165), 10877 states have call predecessors, (11165), 11165 states have call successors, (11165) [2023-12-02 16:11:37,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38055 states to 38055 states and 53098 transitions. [2023-12-02 16:11:37,436 INFO L78 Accepts]: Start accepts. Automaton has 38055 states and 53098 transitions. Word has length 308 [2023-12-02 16:11:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:11:37,437 INFO L495 AbstractCegarLoop]: Abstraction has 38055 states and 53098 transitions. [2023-12-02 16:11:37,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-12-02 16:11:37,437 INFO L276 IsEmpty]: Start isEmpty. Operand 38055 states and 53098 transitions. [2023-12-02 16:11:37,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2023-12-02 16:11:37,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:11:37,462 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:11:37,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 16:11:37,463 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:11:37,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:11:37,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1395912277, now seen corresponding path program 1 times [2023-12-02 16:11:37,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:11:37,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094438586] [2023-12-02 16:11:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:11:37,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:11:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:11:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1631 trivial. 0 not checked. [2023-12-02 16:11:37,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:11:37,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094438586] [2023-12-02 16:11:37,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094438586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:11:37,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:11:37,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:11:37,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406052506] [2023-12-02 16:11:37,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:11:37,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:11:37,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:11:37,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:11:37,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:11:37,742 INFO L87 Difference]: Start difference. First operand 38055 states and 53098 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-02 16:11:44,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:11:44,777 INFO L93 Difference]: Finished difference Result 93803 states and 130938 transitions. [2023-12-02 16:11:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:11:44,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 312 [2023-12-02 16:11:44,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:11:44,996 INFO L225 Difference]: With dead ends: 93803 [2023-12-02 16:11:44,996 INFO L226 Difference]: Without dead ends: 55881 [2023-12-02 16:11:45,087 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 16:11:45,087 INFO L413 NwaCegarLoop]: 2781 mSDtfsCounter, 1591 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 4313 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:11:45,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 4313 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-02 16:11:45,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55881 states. [2023-12-02 16:11:47,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55881 to 55847. [2023-12-02 16:11:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55847 states, 35207 states have (on average 1.2816485358025393) internal successors, (45123), 35895 states have internal predecessors, (45123), 16361 states have call successors, (16361), 4278 states have call predecessors, (16361), 4278 states have return successors, (16361), 15913 states have call predecessors, (16361), 16361 states have call successors, (16361) [2023-12-02 16:11:47,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55847 states to 55847 states and 77845 transitions. [2023-12-02 16:11:47,369 INFO L78 Accepts]: Start accepts. Automaton has 55847 states and 77845 transitions. Word has length 312 [2023-12-02 16:11:47,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:11:47,370 INFO L495 AbstractCegarLoop]: Abstraction has 55847 states and 77845 transitions. [2023-12-02 16:11:47,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-02 16:11:47,371 INFO L276 IsEmpty]: Start isEmpty. Operand 55847 states and 77845 transitions. [2023-12-02 16:11:47,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-02 16:11:47,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:11:47,415 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:11:47,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 16:11:47,415 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:11:47,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:11:47,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1787958443, now seen corresponding path program 1 times [2023-12-02 16:11:47,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:11:47,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326371035] [2023-12-02 16:11:47,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:11:47,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:11:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:11:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1631 trivial. 0 not checked. [2023-12-02 16:11:47,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:11:47,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326371035] [2023-12-02 16:11:47,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326371035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:11:47,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:11:47,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:11:47,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728434200] [2023-12-02 16:11:47,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:11:47,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:11:47,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:11:47,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:11:47,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:11:47,874 INFO L87 Difference]: Start difference. First operand 55847 states and 77845 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-02 16:11:50,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:11:51,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:11:53,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:11:57,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:11:57,340 INFO L93 Difference]: Finished difference Result 137691 states and 191823 transitions. [2023-12-02 16:11:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:11:57,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 319 [2023-12-02 16:11:57,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:11:57,649 INFO L225 Difference]: With dead ends: 137691 [2023-12-02 16:11:57,649 INFO L226 Difference]: Without dead ends: 81977 [2023-12-02 16:11:57,794 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 16:11:57,795 INFO L413 NwaCegarLoop]: 2790 mSDtfsCounter, 1585 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:11:57,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 4322 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-02 16:11:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81977 states. [2023-12-02 16:12:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81977 to 81943. [2023-12-02 16:12:00,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81943 states, 51553 states have (on average 1.2778111846061335) internal successors, (65875), 52601 states have internal predecessors, (65875), 24022 states have call successors, (24022), 6367 states have call predecessors, (24022), 6367 states have return successors, (24022), 23334 states have call predecessors, (24022), 24022 states have call successors, (24022) [2023-12-02 16:12:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81943 states to 81943 states and 113919 transitions. [2023-12-02 16:12:01,033 INFO L78 Accepts]: Start accepts. Automaton has 81943 states and 113919 transitions. Word has length 319 [2023-12-02 16:12:01,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:01,034 INFO L495 AbstractCegarLoop]: Abstraction has 81943 states and 113919 transitions. [2023-12-02 16:12:01,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-02 16:12:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 81943 states and 113919 transitions. [2023-12-02 16:12:01,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-12-02 16:12:01,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:01,076 INFO L195 NwaCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:12:01,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 16:12:01,076 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:12:01,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:01,076 INFO L85 PathProgramCache]: Analyzing trace with hash 586595490, now seen corresponding path program 1 times [2023-12-02 16:12:01,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:01,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167527636] [2023-12-02 16:12:01,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:01,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1736 trivial. 0 not checked. [2023-12-02 16:12:01,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:01,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167527636] [2023-12-02 16:12:01,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167527636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:01,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:01,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:12:01,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763491508] [2023-12-02 16:12:01,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:01,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:12:01,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:01,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:12:01,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:12:01,937 INFO L87 Difference]: Start difference. First operand 81943 states and 113919 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-02 16:12:05,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:12:07,675 WARN L539 Checker$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 16:12:09,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:12:15,174 WARN L539 Checker$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 16:12:17,183 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 16:12:24,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:24,043 INFO L93 Difference]: Finished difference Result 190659 states and 264903 transitions. [2023-12-02 16:12:24,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:12:24,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 329 [2023-12-02 16:12:24,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:24,547 INFO L225 Difference]: With dead ends: 190659 [2023-12-02 16:12:24,547 INFO L226 Difference]: Without dead ends: 108849 [2023-12-02 16:12:24,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:12:24,706 INFO L413 NwaCegarLoop]: 2949 mSDtfsCounter, 1609 mSDsluCounter, 3752 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 6701 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:24,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 6701 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1730 Invalid, 5 Unknown, 0 Unchecked, 18.4s Time] [2023-12-02 16:12:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108849 states. [2023-12-02 16:12:28,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108849 to 108815. [2023-12-02 16:12:28,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108815 states, 68415 states have (on average 1.276313673901922) internal successors, (87319), 69823 states have internal predecessors, (87319), 31779 states have call successors, (31779), 8620 states have call predecessors, (31779), 8620 states have return successors, (31779), 30851 states have call predecessors, (31779), 31779 states have call successors, (31779) [2023-12-02 16:12:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108815 states to 108815 states and 150877 transitions. [2023-12-02 16:12:29,237 INFO L78 Accepts]: Start accepts. Automaton has 108815 states and 150877 transitions. Word has length 329 [2023-12-02 16:12:29,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:29,238 INFO L495 AbstractCegarLoop]: Abstraction has 108815 states and 150877 transitions. [2023-12-02 16:12:29,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-02 16:12:29,238 INFO L276 IsEmpty]: Start isEmpty. Operand 108815 states and 150877 transitions. [2023-12-02 16:12:29,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-12-02 16:12:29,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:29,265 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:12:29,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 16:12:29,266 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:12:29,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash 539537664, now seen corresponding path program 1 times [2023-12-02 16:12:29,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:29,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270731939] [2023-12-02 16:12:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:29,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2023-12-02 16:12:29,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:29,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270731939] [2023-12-02 16:12:29,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270731939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:29,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:29,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:12:29,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129083062] [2023-12-02 16:12:29,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:29,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:12:29,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:29,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:12:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:12:29,759 INFO L87 Difference]: Start difference. First operand 108815 states and 150877 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-02 16:12:32,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:12:33,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:12:37,619 WARN L539 Checker$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 16:12:44,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:44,379 INFO L93 Difference]: Finished difference Result 264843 states and 367083 transitions. [2023-12-02 16:12:44,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:12:44,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 341 [2023-12-02 16:12:44,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:45,096 INFO L225 Difference]: With dead ends: 264843 [2023-12-02 16:12:45,096 INFO L226 Difference]: Without dead ends: 156161 [2023-12-02 16:12:45,284 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 16:12:45,285 INFO L413 NwaCegarLoop]: 2654 mSDtfsCounter, 1547 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:45,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 4169 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 587 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2023-12-02 16:12:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156161 states. [2023-12-02 16:12:51,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156161 to 156063. [2023-12-02 16:12:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156063 states, 98347 states have (on average 1.273907694184876) internal successors, (125285), 100483 states have internal predecessors, (125285), 45111 states have call successors, (45111), 12604 states have call predecessors, (45111), 12604 states have return successors, (45111), 43671 states have call predecessors, (45111), 45111 states have call successors, (45111) [2023-12-02 16:12:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156063 states to 156063 states and 215507 transitions. [2023-12-02 16:12:52,341 INFO L78 Accepts]: Start accepts. Automaton has 156063 states and 215507 transitions. Word has length 341 [2023-12-02 16:12:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:52,343 INFO L495 AbstractCegarLoop]: Abstraction has 156063 states and 215507 transitions. [2023-12-02 16:12:52,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-02 16:12:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 156063 states and 215507 transitions. [2023-12-02 16:12:52,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-12-02 16:12:52,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:52,382 INFO L195 NwaCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:12:52,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 16:12:52,382 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:12:52,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:52,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1523666285, now seen corresponding path program 1 times [2023-12-02 16:12:52,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:52,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132843062] [2023-12-02 16:12:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:52,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1736 trivial. 0 not checked. [2023-12-02 16:12:52,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:52,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132843062] [2023-12-02 16:12:52,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132843062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:52,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:52,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:12:52,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468195913] [2023-12-02 16:12:52,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:52,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:12:52,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:52,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:12:52,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:12:52,875 INFO L87 Difference]: Start difference. First operand 156063 states and 215507 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-02 16:12:56,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:12:58,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:08,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:08,827 INFO L93 Difference]: Finished difference Result 363137 states and 500894 transitions. [2023-12-02 16:13:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:13:08,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 337 [2023-12-02 16:13:08,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:09,631 INFO L225 Difference]: With dead ends: 363137 [2023-12-02 16:13:09,631 INFO L226 Difference]: Without dead ends: 207207 [2023-12-02 16:13:09,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:13:09,925 INFO L413 NwaCegarLoop]: 2955 mSDtfsCounter, 1609 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 5172 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:09,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 5172 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 16:13:10,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207207 states. [2023-12-02 16:13:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207207 to 207157. [2023-12-02 16:13:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207157 states, 130348 states have (on average 1.2704913002117408) internal successors, (165606), 133212 states have internal predecessors, (165606), 59709 states have call successors, (59709), 17099 states have call predecessors, (59709), 17099 states have return successors, (59709), 57773 states have call predecessors, (59709), 59709 states have call successors, (59709) [2023-12-02 16:13:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207157 states to 207157 states and 285024 transitions. [2023-12-02 16:13:20,183 INFO L78 Accepts]: Start accepts. Automaton has 207157 states and 285024 transitions. Word has length 337 [2023-12-02 16:13:20,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:20,185 INFO L495 AbstractCegarLoop]: Abstraction has 207157 states and 285024 transitions. [2023-12-02 16:13:20,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-02 16:13:20,185 INFO L276 IsEmpty]: Start isEmpty. Operand 207157 states and 285024 transitions. [2023-12-02 16:13:20,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-12-02 16:13:20,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:20,232 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:13:20,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 16:13:20,232 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:13:20,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:20,233 INFO L85 PathProgramCache]: Analyzing trace with hash -988154449, now seen corresponding path program 1 times [2023-12-02 16:13:20,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:20,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436431673] [2023-12-02 16:13:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:20,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2023-12-02 16:13:20,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:20,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436431673] [2023-12-02 16:13:20,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436431673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:20,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:20,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:13:20,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108891917] [2023-12-02 16:13:20,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:20,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:13:20,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:20,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:13:20,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:13:20,888 INFO L87 Difference]: Start difference. First operand 207157 states and 285024 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-02 16:13:27,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:38,968 INFO L93 Difference]: Finished difference Result 500343 states and 687852 transitions. [2023-12-02 16:13:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:13:38,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 350 [2023-12-02 16:13:38,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:40,123 INFO L225 Difference]: With dead ends: 500343 [2023-12-02 16:13:40,123 INFO L226 Difference]: Without dead ends: 293319 [2023-12-02 16:13:40,534 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 16:13:40,535 INFO L413 NwaCegarLoop]: 2669 mSDtfsCounter, 1529 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 4184 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:40,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 4184 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-02 16:13:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293319 states. [2023-12-02 16:13:53,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293319 to 293189. [2023-12-02 16:13:53,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293189 states, 184957 states have (on average 1.2664943743680963) internal successors, (234247), 189253 states have internal predecessors, (234247), 83541 states have call successors, (83541), 24690 states have call predecessors, (83541), 24690 states have return successors, (83541), 80573 states have call predecessors, (83541), 83541 states have call successors, (83541) [2023-12-02 16:13:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293189 states to 293189 states and 401329 transitions. [2023-12-02 16:13:54,657 INFO L78 Accepts]: Start accepts. Automaton has 293189 states and 401329 transitions. Word has length 350 [2023-12-02 16:13:54,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:54,658 INFO L495 AbstractCegarLoop]: Abstraction has 293189 states and 401329 transitions. [2023-12-02 16:13:54,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-02 16:13:54,659 INFO L276 IsEmpty]: Start isEmpty. Operand 293189 states and 401329 transitions. [2023-12-02 16:13:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-02 16:13:54,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:54,698 INFO L195 NwaCegarLoop]: trace histogram [28, 19, 19, 19, 19, 19, 19, 8, 8, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:13:54,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 16:13:54,698 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:13:54,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:54,699 INFO L85 PathProgramCache]: Analyzing trace with hash 169742204, now seen corresponding path program 1 times [2023-12-02 16:13:54,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:54,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464599496] [2023-12-02 16:13:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:54,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1935 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2023-12-02 16:13:59,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:59,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464599496] [2023-12-02 16:13:59,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464599496] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:13:59,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903130902] [2023-12-02 16:13:59,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:59,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:13:59,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:13:59,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:13:59,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:14:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:14:01,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 4785 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 16:14:01,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:14:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1935 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1935 trivial. 0 not checked. [2023-12-02 16:14:08,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:14:08,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903130902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:14:08,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:14:08,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-02 16:14:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575643475] [2023-12-02 16:14:08,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:14:08,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:14:08,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:14:08,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:14:08,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:14:08,057 INFO L87 Difference]: Start difference. First operand 293189 states and 401329 transitions. Second operand has 6 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (41), 1 states have call predecessors, (41), 2 states have return successors, (39), 2 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-02 16:14:11,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:13,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:15,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:17,476 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 16:14:37,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:14:37,510 INFO L93 Difference]: Finished difference Result 293189 states and 401329 transitions. [2023-12-02 16:14:37,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:14:37,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (41), 1 states have call predecessors, (41), 2 states have return successors, (39), 2 states have call predecessors, (39), 1 states have call successors, (39) Word has length 365 [2023-12-02 16:14:37,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:14:37,515 INFO L225 Difference]: With dead ends: 293189 [2023-12-02 16:14:37,515 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 16:14:37,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:14:37,922 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 1582 mSDsluCounter, 3845 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 5392 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:14:37,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 5392 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1598 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2023-12-02 16:14:37,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 16:14:37,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 16:14:37,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:14:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 16:14:37,948 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 365 [2023-12-02 16:14:37,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:14:37,949 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 16:14:37,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (41), 1 states have call predecessors, (41), 2 states have return successors, (39), 2 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-02 16:14:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 16:14:37,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 16:14:37,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 16:14:37,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:14:38,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210df177-7aaa-44eb-ba20-710852b1f4e2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 16:14:38,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 16:15:45,356 WARN L293 SmtUtils]: Spent 15.06s on a formula simplification that was a NOOP. DAG size: 622 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:16:12,675 WARN L293 SmtUtils]: Spent 14.65s on a formula simplification that was a NOOP. DAG size: 622 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:16:40,766 WARN L293 SmtUtils]: Spent 14.76s on a formula simplification that was a NOOP. DAG size: 625 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:16:54,680 WARN L293 SmtUtils]: Spent 13.91s on a formula simplification that was a NOOP. DAG size: 625 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:17:20,133 WARN L293 SmtUtils]: Spent 13.70s on a formula simplification that was a NOOP. DAG size: 625 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:17:38,533 WARN L293 SmtUtils]: Spent 13.63s on a formula simplification that was a NOOP. DAG size: 622 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:18:01,330 WARN L293 SmtUtils]: Spent 14.22s on a formula simplification that was a NOOP. DAG size: 625 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:18:32,891 WARN L293 SmtUtils]: Spent 14.62s on a formula simplification that was a NOOP. DAG size: 626 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:18:49,488 WARN L293 SmtUtils]: Spent 14.26s on a formula simplification that was a NOOP. DAG size: 625 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:19:17,263 WARN L293 SmtUtils]: Spent 13.51s on a formula simplification that was a NOOP. DAG size: 622 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:19:49,465 WARN L293 SmtUtils]: Spent 12.96s on a formula simplification that was a NOOP. DAG size: 626 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:20:20,490 WARN L293 SmtUtils]: Spent 13.14s on a formula simplification that was a NOOP. DAG size: 626 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:20:33,441 WARN L293 SmtUtils]: Spent 7.19s on a formula simplification that was a NOOP. DAG size: 476 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:21:15,629 WARN L293 SmtUtils]: Spent 12.83s on a formula simplification that was a NOOP. DAG size: 626 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:21:44,560 WARN L293 SmtUtils]: Spent 7.12s on a formula simplification that was a NOOP. DAG size: 476 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:22:03,180 WARN L293 SmtUtils]: Spent 12.97s on a formula simplification that was a NOOP. DAG size: 622 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:22:24,419 WARN L293 SmtUtils]: Spent 12.96s on a formula simplification that was a NOOP. DAG size: 626 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:22:54,141 WARN L293 SmtUtils]: Spent 13.64s on a formula simplification that was a NOOP. DAG size: 625 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 16:23:11,472 WARN L293 SmtUtils]: Spent 12.92s on a formula simplification that was a NOOP. DAG size: 622 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)